Twenty-one people have been injured in a bus bomb a block away from the headquarters of the Israeli Defence Force (IDF) in Tel Aviv on Wednesday, in what Israeli police have described as a terror attack.

The bomb was reportedly attached to the bus and not a suicide attack. The Jewish Chronicle has reported that the police are still searching for the culprit.

Foreign secretary William Hague said he was "deeply concerned" at the reports of an explosion, which follows a week of violence after Israel launched 'Operation Pillar of Defence' by assassinating the head of Hamas' military wing Ahmed Said Khalil al-Jabari. Around 130 Palestinians and five Israel have died in the ensuing conflict.

israel bombing

An Israeli security officer stands next to a blown up bus at the site of a bombing in Tel Aviv

Speaking at prime minister's questions on Wednesday afternoon Ed Miliband and David Cameron called the attack "appalling."

David Cameron told MPs the European Union and America needed to pressure Israel and those who have contacts with Hamas to "de-escalate."

"We need a ceasefire and then beyond that what we need is proper discussion about the future of Israel and Palestine."

According to the BBC's Paul Danahar there was celebratory gunfire in Gaza as news of the attack broke.

Hamas spokesman, Sami Abu Zuhri, told Reuters they saw "it as a natural response to the Israeli massacres... in Gaza."

Tel Aviv, Israel's largest city, has not been hit by a significant bomb blast since a suicide bomb which killed 11 in April 2006.

Israeli Police spokesperson Mickey Rosenfeld said at least 15 people were injured, three "moderately."

"We do believe it was a terrorist attack," he said.

According to Aljazeera, witnesses saw a man leave a bomb on the bus and then run off.

The bomb exploded near military headquarters with IDF spokesperson Avital Leibovich tweeting: "A bus explodes under my Tel Aviv office. Possibly due to a bomb or suicide bomber. Hearing the sirens of the ambulances."

Ofir Gendelman, a spokesman for Israel's prime minister Benjamin Netanyahu, said: "A bomb exploded on a bus in central Tel Aviv. This was a terrorist attack. Most of the injured suffered only mild injuries."

rescue workers

The bomb exploded near military headquarters

William Hague said: "At this time our thoughts are with the individuals and families affected.


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tel aviv

Israeli rescue workers and paramedics carry a wounded person from the site of a bombing in Tel Aviv


"Details of what happened are still unclear but if this was a terrorist attack we condemn it unreservedly. We are clear that terrorists must not be allowed to set the agenda.

"This shocking violence further underlines the urgent need for an immediate de-escalation of violence and a full ceasefire. We urge all those involved to do everything they can to give maximum support to Egyptian-led efforts to allow them to succeed."

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  • A destroyed bus is seen at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza.(AP Photo/Dan Balilty)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL - NOVEMBER 21: Emergency services rush to the scene of an explosion on a bus on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A general view of the scene after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A woman is helped from the scene by emergency services after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A general view of the scene after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A general view of the scene after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A woman is helped from the scene by emergency services after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A general view of the scene after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A general view of the scene after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: A general view of the scene after an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL- NOVEMBER 21: Emergency services at the scene of an explosion on a bus with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEL - NOVEMBER 21: Emergency services at the scene after a bus exploded with passengers onboard on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Getty Images)

  • Bomb Blast On Bus In Tel Aviv

    TEL AVIV, ISRAEl - NOVEMBER 21: Emergency services rush to the scene of an explosion on a bus on November 21, 2012 in central Tel Aviv, Israel. At least ten people have been injured in a blast on a bus near military headquarters in what is being described as terrorist attack which threatens to derail ongoing cease-fire negotiations between Israeli and Palestinian authorities. (Photo by Ziv Oren/Getty Images)

  • Israelis look at a blown up bus at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding at several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • Israeli police officers examine a blown up bus at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding at several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • An Israeli security officer rushes to the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding at several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • Israeli rescue workers and paramedics carry an injured woman from the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza that has killed more than 130 Palestinians. (AP Photo/Oded Balilty)

  • Israeli police and security personnel rush to the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding at several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • An Israeli security officer stands next to a blown up bus at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • An Israeli security officer stands next to a blown up bus at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • Israeli police officers examine a blown up bus at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding at several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • Israeli rescue workers and paramedics carry a wounded person from the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza that has killed more than 130 Palestinians. (AP Photo/Oded Balilty)

  • Israeli rescue workers and paramedics carry a wounded person from the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza that has killed more than 130 Palestinians. (AP Photo/Oded Balilty)

  • Israelis look at a blown up bus at the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding at several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza. (AP Photo/Oded Balilty)

  • Israeli rescue workers and paramedics carry a wounded person from the site of a bombing in Tel Aviv, Israel, Wednesday, Nov. 21, 2012. A bomb ripped through an Israeli bus near the nation's military headquarters in Tel Aviv on Wednesday, wounding several people, Israeli officials said. The blast came amid a weeklong Israeli offensive against Palestinian militants in Gaza that has killed more than 130 Palestinians. (AP Photo/Oded Balilty)