From The Daily Mail
The security services face difficult questions today over how at least one of the London Bridge terrorists slipped through the intelligence net despite being reported to the police at least twice for his extremism.
The 27-year-old Muslim, known to friends as 'Abz', appeared in a TV documentary last year about British jihadists – and was involved in a filmed altercation with police after an ISIS-style flag was unfurled in Regent's Park, London.
He was caught on camera alongside two notorious preachers who were well known to police and intelligence officials because of their extremist views.
A friend of the suspect had reported him to the anti-terror hotline after he became radicalised by watching extremist videos on YouTube and police were also warned about the suspect radicalising children in a local park two years ago, giving them sweets and money.