Two British workers who escaped the hostage crisis in Algeria described their period of captivity as "exciting" in an interview with Algerian state TV while two others said that they fear for the safety of at least 10 UK citizens left behind.

The first man, sat on a bus being taken away from the gas field in the Algerian desert, praised the Algerian armed forces.

"I think they did a fantastic job. I was very impressed with the Algerian army," he told Algerian state television.

"It was a very exciting episode. I feel sorry for anybody who has been hurt but, other than that, I enjoyed it."

A second man said: "The gendarmes did a fantastic job. They kept us all nice and safe and fought off the bad guys.

"I never really felt in any danger, to be honest."

The circumstances behind the television interviews were not certain, and it was not clear whether either man might have been speaking under duress.

A further two British workers spoke to Algerian television about their ordeal.

"I feel safe at the moment but I won't feel 100% happy until I'm back in the UK," one man said.

"My heart goes out to the guys that are still there and hopefully everyone comes home safe because, at the end of the day, it's only work."

Another man said he was "very relieved" to be out. He added: "As much as I'm glad to be out, my thoughts are with colleagues that are still there at the moment."

Security sources told Algerian state news agency APS that nearly 100 overseas workers had been "released" - and put the total originally seized by Islamist militants at 132.

At least 10 UK citizens are understood to remain "at risk" as local efforts continue to end the terrorist attack at a remote desert gas facility.

The Algerian government said last night that a significant number of foreigners had been freed in an operation led by its own special forces but an unspecified number had been killed.

It remains unclear how many of those still in the complex are alive.

SEE ALSO

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Algerian Hostage Crisis Timeline: Emergency Response To 'Cold Blooded Murder'

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  • An unidentified rescued hostage speaks to the media in a hospital Ain Amenas, Algeria, in this image taken from television Friday Jan. 18, 2013. Algeria’s state news service says nearly 100 out of 132 foreign hostages have been freed from a gas plant where Islamist militants had held them captive for three days. The APS news agency report was an unexpected indication of both more hostages than had previously been reported and a potentially breakthrough development in what has been a bloody siege. (AP Photo/Canal Algerie via Assiaciated Press TV) ** TV OUT ALGERIA OUT **

  • Unidentified rescued hostages pose for the media in Ain Amenas, Algeria, in this image taken from television Friday Jan. 18, 2013. Algeria’s state news service says nearly 100 out of 132 foreign hostages have been freed from a gas plant where Islamist militants had held them captive for three days. The APS news agency report was an unexpected indication of both more hostages than had previously been reported and a potentially breakthrough development in what has been a bloody siege. (AP Photo/Canal Algerie via Associated Press TV) ** TV OUT ALGERIA OUT **

  • Algerian special police unit officers secure the hospital in Ain Amenas, Algeria, Friday, Jan. 18, 2013, two days after the start of the terrorist attack at a gas plant. The hostage crisis in the remote desert of Algeria is not over, Britain said Friday, after an Algerian raid on the gas plant to wipe out Islamist militants and free their captives from at least 10 countries unleashed bloody chaos. (AP Photo/Anis Belghoul)

  • An unidentified rescued hostage receives treatment in a hospital in Ain Amenas, Algeria, in this image taken from television Friday Jan. 18, 2013. Algeria’s state news service says nearly 100 out of 132 foreign hostages have been freed from a gas plant where Islamist militants had held them captive for three days. The APS news agency report was an unexpected indication of both more hostages than had previously been reported and a potentially breakthrough development in what has been a bloody siege. (AP Photo/Canal Algerie via Associated Press TV) ** TV OUT ALGERIA OUT **

  • An unidentified rescued hostage speaks to the media in a hospital in Ain Amenas, Algeria, in this image taken from television Friday Jan. 18, 2013. Algeria’s state news service says nearly 100 out of 132 foreign hostages have been freed from a gas plant where Islamist militants had held them captive for three days. The APS news agency report was an unexpected indication of both more hostages than had previously been reported and a potentially breakthrough development in what has been a bloody siege. (AP Photo/Canal Algerie via Associated Press TV) ** TV OUT ALGERIA OUT **

  • This image from video provided by the SITE Intel Group made available Thursday Jan. 17, 2013, purports to show militant militia leader Moktar Belmoktar. Algerian officials scrambled Thursday Jan. 17, 2013 for a way to end an armed standoff deep in the Sahara desert with Islamic militants who have taken dozens of foreigners hostage, turning to tribal Algerian Tuareg leaders for talks and contemplating an international force. The group claiming responsibility — called Katibat Moulathamine or the Masked Brigade — says it has captured 41 foreigners, including seven Americans, in the surprise attack Wednesday on the Ain Amenas gas plant. Algerian Interior Minister Daho Ould Kabila said the roughly 20 well armed gunmen were from Algeria itself, operating under orders from Moktar Belmoktar, al-Qaida's strongman in the Sahara. (AP Photo/SITE Intel Group) THE ASSOCIATED PRESS HAS NO WAY OF INDEPENDENTLY VERIFYING THE CONTENT, LOCATION OR DATE OF THIS PICTURE. MANDATORY CREDIT: SITE Intel Group

  • This April 19, 2005 photo released by Statoil via NTB scanpix, shows the Ain Amenas gas field in Algeria, where Islamist militants raided and took hostages Wednesday Jan. 16, 2013. As Algerian army helicopters clattered overhead deep in the Sahara desert, Islamist militants hunkered down for the night in the natural gas complex they had assaulted Wednesday morning, killing two people and taking dozens of foreigners hostage in what could be the first spillover from France's intervention in Mali. (AP Photo/Kjetil Alsvik, Statoil via NTB scanpix) NORWAY OUT

  • This April 19, 2005 photo released by Statoil via NTB scanpix, shows the Ain Amenas gas field in Algeria, where Islamist militants raided and took hostages Wednesday Jan. 16, 2013. As Algerian army helicopters clattered overhead deep in the Sahara desert, Islamist militants hunkered down for the night in the natural gas complex they had assaulted Wednesday morning, killing two people and taking dozens of foreigners hostage in what could be the first spillover from France's intervention in Mali. (AP Photo/Kjetil Alsvik, Statoil via NTB scanpix) NORWAY OUT

  • JGC Corporation, or Nikki Manager of public relations Takeshi Endo, foreground, answers reporters' questions following Wednesday's attack at a natural gas complex in Algeria which involves the company's workers, at its headquarters in Yokohama, near Tokyo Thursday, Jan. 17, 2013. A militant group that claimed responsibility said 41 foreigners were being held after the assault on one of oil-rich Algeria's energy facilities. Two foreigners were killed. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT, NO LICENSING IN CHINA, HONG KONG, JAPAN, SOUTH KOREA AND FRANCE

  • Helge Lund

    Statoil Chief Executive Helge Lund answers questions about the situation in the gas field, jointly operated by BP, the Norwegian energy company Statoil and the Algerian state oil company Sonatrachfield along with Japanese company JGC Corp., in Ain Amenas in Algeria during a press briefing in Stavanger, Norway, Thursday, Jan. 17, 2013. In a desert standoff deep in the Sahara, the Algerian army ringed the natural gas complex where Islamist militants hunkered down with dozens of hostages Wednesday night after a rare attack that appeared to be the first violent shock wave from the French intervention in Mali. (AP Photo/NTB Scanpix, Kent Skibstad) NORWAY OUT

  • Helge Lund

    Statoil Chief Executive Helge Lund answers questions about the situation in the gas field, jointly operated by BP, the Norwegian energy company Statoil and the Algerian state oil company Sonatrachfield along with Japanese company JGC Corp., in Ain Amenas in Algeria during a press briefing in Stavanger, Norway, Thursday, Jan. 17, 2013. In a desert standoff deep in the Sahara, the Algerian army ringed the natural gas complex where Islamist militants hunkered down with dozens of hostages Wednesday night after a rare attack that appeared to be the first violent shock wave from the French intervention in Mali. (AP Photo/NTB Scanpix, Kent Skibstad) NORWAY OUT

  • STATOIL

    Statoil spokesman Ole Anders Skauby, centre right, talks to TV reporters outside Scandic Bergen Airport hotel where a drop-in center is established for relatives of hostages involved in the situation in Algeria. Militants are holding a number of foreigners hostages in the Sahara desert in revenge for Algeria's support of French efforts to remove Islamists from control of neighboring northern Mali. (AP Photo / Hakon Mosvold Larsen / NTB scanpix) NORWAY OUT

  • An unidentified rescued hostage receives treatment in a hospital Ain Amenas, Algeria, in this image taken from television Friday Jan. 18, 2013. Algeria’s state news service says nearly 100 out of 132 foreign hostages have been freed from a gas plant where Islamist militants had held them captive for three days. The APS news agency report was an unexpected indication of both more hostages than had previously been reported and a potentially breakthrough development in what has been a bloody siege. (AP Photo/Canal Algerie via Assiaciated Press TV) ** TV OUT ALGERIA OUT **

  • Residents of Ain Amenas, Algeria, gather outside the hospital trying to get information concerning relatives wounded during the terrorist attack at the gas plant, Friday, Jan. 18, 2013. The hostage crisis in the remote desert of Algeria is not over, Britain said Friday, after an Algerian raid on the gas plant to wipe out Islamist militants and free their captives from at least 10 countries unleashed bloody chaos. (AP Photo/Anis Belghoul)

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