A 2016 Channel 4 documentary on British jihadists titled Jihadi Next Door, has been removed from the channel and Netflix after it was revealed that it featured Khuram Butt, one of the perpetrators of Saturday’s terrorist attack in London

The news surfaced late on Monday, a few days after the attack, which saw three terrorists, now identified by police as Youssef Zaghba, Rachid Redouane and Khuram Butt - ramming into pedestrians at London Bridge and randomly stabbing people at Borough Market, leaving 7 dead and at least 48 injured. 

All three terrorists were shot dead at the scene of the attack. 

Jihadi Next Door, was filmed at events attended by notorious extremist Islamic preachers Abu Rumaysah and Abu Haleema and released in 2016. 

According to The Telegraph, Butt briefly appears in the film and is seen unfurling the so-called Islamic State's (IS) flag in a public park. 

Butt reported to Police months before London attack

As more details on Butt continue to emerge, one of his former acquaintances revealed that he had previously reported him to the police after he became concerned about his friend’s extremist views. 

Speaking to BBC's Asia Network, the unnamed man claimed that Butt became radicalized after watching extremist videos on Youtube.

“We spoke about a particular attack that happened and like most radicals he had a justification for anything and everything and that day I realized I needed to contact the authorities," he said, adding that the terrorist was allowed to keep his passport and wasn't arrested after the report. 

“I did my bit, I know a lot of other people did their bit, but the authorities did not do their bit,” he concluded.

According to The Guardian, the Metropolitan police admitted on Monday that Butt was known "to the police and MI5 and they had opened an investigation into him in 2015."

Police also revealed that a few months after that, "detectives received a call from a concerned member of the public on the anti-terrorism hotline with information about his extremism." 

However, according to the UK's top counter-terrorism officer Mark Rowley, all inquiries into Butt, established no intelligence or evidence to suggest any terrorist activity or that an attack was being planned.