An extremist has had a mobile phone seized from him in a prison in Liverpool after fears he was radicalising other inmates.
Rajib Khan, who is 38 and from Luton, was one of a group of men jailed in February after an undercover police operation found they were drumming up support for Islamic State.
He is serving a five-year sentence in HMP Altcourse, Liverpool.
The Sun reported he was using the phone to show beheading videos to his cellmate in a bid to radicalise him.
Khan was arrested after an undercover police officer infiltrated the Luton chapter of the banned group Al-Muhajiroun and secretly recorded speeches over 20 months.
At the meetings, attended by up to 80 people including young children, the group praised IS and urged people to support the terror group and travel to Syria to fight.
Khan was described as an "important and influential" member of the group, who had described the Charlie Hebdo atrocity in Paris as "excellent news".