London, UK - Radical Muslim preacher Abu Izzadeen has been returned to prison after breaching the terms of his release, BBC News understands.
Izzadeen, also knows as Omar Brooks, was released from prison in May after his four-and-a-half-year sentence for inciting terrorism was cut on appeal.
He was found guilty in 2008 of urging worshippers at a London mosque to fight US and British troops in Iraq.
Izzadeen, 34, once heckled former home secretary John Reid at a meeting.
On appeal, Izzadeen's sentence for terrorism fundraising and incitement was cut by one year, leading to his release on licence in May.
Fierce battle
Izzadeen had been released under tight restrictions, which included a curfew and monitoring arrangements involving both police and probation officers.
A Muslim convert, Izzadeen was convicted along with five others of supporting terrorism in speeches made at London's Regent's Park mosque on 9 November 2004.
The speeches came as US troops were engaged in a fierce battle in the Iraqi city of Falluja.
Clips of the men speaking about jihad, Osama Bin Laden and prejudice towards Muslims were played at their 2008 trial, including one during which Izzadeen said that Allah had given mujahideen (holy warriors) a "chance to kill the American".
Izzadeen defended his actions, saying he and other British Muslims had "no other weapon than our tongue" to fight against what they saw as a "massacre" of Muslims by Western forces in Iraq.
His lawyers argued on appeal that his sentence should be reduced because of his pre-trial time in custody.
Four of the other men convicted alongside Izzadeen also had their sentences reduced.