Controversial preacher Anjem Choudary claims to know one of the Woolwich attack suspects, it has been reported.

Choudary, former leader of the banned banned Al Muhajiroun group, told The Independent he knew one of the men, who was known as Mujahid.

He told the paper: “He was a pleasant, quiet guy. He reverted to Islam in about 2003. He was just a completely normal guy.

"He was interested in Islam, in memorising the Koran. He disappeared about two years ago. I don’t know what influences he has been under since then.”

It came as the killers were reported to be of Nigerian background.

The men, who are being treated in separate hospitals while under arrest, are most likely to be British citizens converted to a radical form of Islam, the Press Association reported.

They are not thought to have links to terror groups based in Nigeria, such as the jihadist militant organisation Boko Haram.

The Foreign Office warns of a high threat from terrorism in the West African nation and raises the prospect of a risk of retaliatory attacks following the French intervention in Mali.

Boko Haram is the most prominent terrorist threat in Nigeria. The group's extremists aspire to establish Islamic law in Nigeria and carry out attacks across states mainly in the north.

In 2011, Boko Haram claimed responsibility for the bombing of the UN building in the Nigerian capital of Abuja, which killed 23 people in an act that showed the group could target Western interests.

The group, whose name means ''Western education is sacrilege'', was blamed for nearly 800 killings last year alone.

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  • Michael Adebolajo, 29, has been found guilty of the murder of soldier Lee Rigby by jurors at the Old Bailey.

  • Michael Adebowale

    Michael Adebowale, 22, has been found guilty of the murder of Lee Rigby by jurors at the Old Bailey.

  • Latest material from the Lee Rigby murder trial

    Vauxhall Tigra in the compound

  • Latest material from the Lee Rigby murder trial

    Michael Adebolajo during police interview

  • Latest material from the Lee Rigby murder trial

    Army Bag

  • Latest material from the Lee Rigby murder trial

    kitchen knife recovered at the scene.

  • Latest material from the Lee Rigby murder trial

    found in the Vauxhall Tigra on the passenger seat.

  • Latest material from the Lee Rigby murder trial

    Letter handed by one of defendants to a member of the public (side 2)

  • Latest material from the Lee Rigby murder trial

    Letter handed by one of defendants to a member of the public (side 1)

  • Latest material from the Lee Rigby murder trial

    Adebowale whilst on the floor raising his gun

  • Latest material from the Lee Rigby murder trial

    Adebolajo and Adebowale on the floor

  • Latest material from the Lee Rigby murder trial

    Adebolajo falling to the floor

  • Latest material from the Lee Rigby murder trial

    Adebolajo walking back to the south footpath of Artillery Place as bus reverses

  • Latest material from the Lee Rigby murder trial

    Adebolajo and Adebowale talking to member of the public

  • Latest material from the Lee Rigby murder trial

    Adebowale with gun in right hand behind tree

  • Latest material from the Lee Rigby murder trial

    Vauxhall Tigra drives westbound Wellington Street, Woolwich, at 13:30hrs, 22 May 2013

  • Latest material from the Lee Rigby murder trial

    Adebolajo purchases knife set and sharpener from Argos at 14:13 on 21 May 2013

  • Latest material from the Lee Rigby murder trial

    Adebolajo enters Argos in Lewisham at 13:55 on 21 May 2013

  • Latest material from the Lee Rigby murder trial

    a still showing bullet damage to a green telephone box

  • Latest material from the Lee Rigby murder trial

    a still showing bullet damage to the wall

  • Latest material from the Lee Rigby murder trial

    a still of Lee Rigby at Woolwich DLR station on 22 May 2013

  • Latest material from the Lee Rigby murder trial

    The gun used

  • Lee Rigby funeral

    The family of Fusilier Lee Rigby, wife Rebecca with son Jack arrive at Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The hearse carrying the coffin of Fusilier Lee Rigby arrives at Bury Parish church in Bury, Greater Manchester, ahead of his funeral tomorrow.

  • Lee Rigby funeral

    The family of Fusilier Lee Rigby, wife Rebecca with son Jack arrive at Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    Mourners including wife Rebecca with son Jack (right) arrive at Bury Parish church in Greater Manchester, for a vigil on the eve of the funeral of Fusilier Lee Rigby.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The family of Fusilier Lee Rigby, wife Rebecca with son Jack arrive at Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is carried into Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is carried into Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is carried into Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The family of Fusilier Lee Rigby, Wife Rebecca with son Jack leave Bury Parish church in Greater Manchester, after a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is carried into Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    Rebecca Rigby carries her son Jack alongside her mother Susan Metcalfe as the leave Bury Parish church in Greater Manchester, after a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    Crowds line the streets as coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    Lyn Rigby (centre) the mother of Fusilier Lee Rigby leaves Bury Parish church in Greater Manchester, after a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    Aimee West, fiancee of Fusilier Lee Rigby, (second left black stripy top), watches as wife Rebecca Rigby, carrying son Jack, follows the coffin as it arrives at Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought into Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The hearse carrying the coffin of Fusilier Lee Rigby arrives at Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is brought to Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    The coffin of Fusilier Lee Rigby is carried into Bury Parish church in Greater Manchester, for a vigil on the eve of his funeral.

  • Lee Rigby funeral

    An envelope addressed to Middleton in Manchester and Woolwich in London, sent from Barbados, sent to Rebecca Rigby, wife of murdered soldier Lee Rigby, at the Fusilier Museum in Bury, during a media interview in the run up to her husbands funeral.