Radical Muslim cleric Abu Hamza is facing 11 terror-related charges including hostage taking and supporting al-Qaeda, says the US government.
US Attorney General John Ashcroft announced the charges in New York as Abu Hamza appeared in a British court to face extradition proceedings.
One charge accuses of him of being involved in an attack in Yemen in 1998 that resulted in four hostages' deaths.
He was remanded in custody until the next stage of the extradition process.
Abu Hamza is also accused of providing support and resources for terrorists, particularly al-Qaeda and of attempting to set up a terror training camp in Bly, Oregon.
Mr Ashcroft said the cleric could face the death penalty or life imprisonment if found guilty.
Captain Hook...bye bye bye bye!
