Police Release New Video of Canada Shooter's Parliament Attack

Cops say passport problem "figured prominently" in his motives, investigation continues.
1:32 | 10/24/14

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Transcript for Police Release New Video of Canada Shooter's Parliament Attack
ABC chief investigative correspondent Brian Ross now with what he's learning about the suspect. How many times did he travel to the U.S.? Here's what Brian learned. Reporter: 15 years ago, Michael Bibeau was a chubby student at a private catholic high school. Yesterday, he was shot dead, carrying out a one-man suicide mission. This picture, which police say is authentic, but from an unknown source, shows he was armed only with a small caliber Winchester hunting rifle. As he stormed parliament, apparently upset because he had not received a passport to head to Syria. I think the passport figured prominently in his motives. Reporter: The road to jihad apparently began after he left the catholic high school outside Montreal in 1999. Over the next ten years, he was little more than one of life's losers, a petty criminal and drug user. Often homeless. His conversion to Islam led him to this mosque, outside Vancouver, three years ago. Where he was remembered today as troubled. He was the kind of person that people around him wouldn't feel too comfortable hanging around. Reporter: Even would a passport, Bibeau was able to cross the border into the U.S. At least four times. Most recently last year. At a time authorities say he had already become radicalized. His parents said today they had not seen him for five years until his mother had lunch with him last week. They said they are crying, not for their son, but for the soldier their son killed. Four times he came to the U.S. Brian Ross, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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