Transcript for Police release photo of London terror attack suspect

He went by many aliases and today we are learning more about this me responsible for the deadly terror attack in the heart of London. Authorities say 52 year old to lead this was a British citizen. Born Adrian Russell edged out before converting to is not yet a long criminal history but nothing terrorism related. And he was living here in Birmingham where investigators were seen collecting evidence. More arrests over night the police describing at least two of those as significant. Massoud was known to authorities a decade ago investigated for ties to violent extremists. But in 2003. Intelligence services concluding he posed a low rates. Last night thousands gathered in London's Trafalgar Square to pay tribute to the victims and the death toll rising. Another victim 75 year old man succumbing to his injuries raising the death tilt of four I had me no time. To get out of the way so I just put my arms forward then this. You know the cards used. Tumbled me over and veteran police officer Keith Palmer who lost his life protecting parliament. In what could be the last image of him this photo taken with the US Horace. Just moments before he was stabbed by the attacker. Ice afraid of British schoolteacher who was on her way to pick up her kids from school and American Kirk Cochran have you topped 54. A musician visiting London with his wife Melissa. Celebrating their 25 wedding anniversary. The only word I can really describe it as it's a real one thing I can say about curtain his legacy though as he he did what is stream and not a lot of people. Get to do that or have the drive to do that. Even know police maintains he acted alone they're now asking anyone who knew him who may have suspected something they didn't feel comfortable coming forward to do so now. Molly hunter ABC news London.

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