A radical Muslim cleric who was arrested in London this morning is facing 11 charges in the US, including hostage taking and conspiracy to provide material support to terrorists.

Abu Hamza, a 47-year-old Egyptian-born cleric, was detained on foot of an extradition warrant from the US. The warrant listed his name as Mustafa Kamel Mustafa, and it also detailed a list of four aliases.

Details of the US harges were revealed in New York as he appeared in court at the top security Belmarsh Prison in south east London.

The US Attorney General, John Ashcroft, announced that Hamza faces charges of conspiracy to take hostages and hostage-taking in connection with an attack in Yemen in 1998 which resulted in the deaths of four hostages.

He is also charged with providing support and resources to al-Qaeda terrorists and with attempting to set up a terror training camp in Afghanistan and supporting the Taliban.

Mr Hamza had been appealing a decision by the UK government to strip him of his British citizenship.

Downing Street later confirmed, however, thatunder current UK rules Mr Hamza could not be extradited if he were to face execution abroad.

He was remanded in custody until next week.