Two of the dead London attackers have been identified.

27-year-old Khuram Shazad Butt, a British citizen who was born in Pakistan, and 30-year-old Rachid Redouane, who had claimed to be Moroccan and Libyan. Both lived in the Barking area of east London, the scene of multiple police raids since Sunday. Police did not identify the third attacker, saying efforts to confirm his identity are ongoing.

You can see Khuram Shazad Butt in this Channel 4 News Special called The Jihadis next door. It was filmed in 2014 (aired later) and he is the one unfolding the ISIS flag in the park and buzzing around when his preacher gets hassled about the flag by police. The Daily Mail has more. Contrary to some news reports, he was not involved in an altercation in the film. It was his preacher who became beligerant. He had a very minor part in the film. According to friends, he became radicalized by watching You Tube films.