Islamic scholar reported London attacker
Media playback is unsupported on your device
Video

London attacks: Islamic scholar reported Khuram Butt to police last year

Dr Usama Hasan describes how he was involved in a confrontation with Khuram Butt, one of the three London attackers at an event last year to mark Eid, the end of Ramadan.

Our special correspondent Ed Thomas has been investigating what the authorities knew about Khuram Butt.

  • 06 Jun 2017
  • From the section UK
Go to next video: Silence for London attack victims