Police Believe Canadian Gunman Was Lone Wolf

Officials say suspect Michael Zehaf-Bibeau wanted to go to Syria, but was frustrated he could not get a passport.
3:18 | 10/24/14

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Transcript for Police Believe Canadian Gunman Was Lone Wolf
And the latest now on the deadly rampage in Canada's capital. The terrifying moments the gunman stealing cars, running into parliament. ABC's Dan Harris is on the scene. You have an inside look at what happened in that parliament building. Reporter: George, this footage really is extraordinary. And not only this morning are we getting this new up close look at what happened inside the parliament building behind me, but strange new insight into the mind of the alleged shooter. You are looking at a lone wolf terror attack in progress. Police says that suspect Michael zee baf Bibeau. And he bolts toward the parliament building gun in hand. He had shot and killed corporal Nathan Cirillo who had been guarding the tomb of the unknown soldier nearby. Now people are frightened fleeing. And look what he does next, stealing this black car, driving it to the front steps and jumping out when it's moving. As he races inside, there are officers in hot pursuit. Once inside, that massive gunfight which ended with the parliament's sergeant at arms, this man, Kevin Vickers, shooting and killing zehaf-bibe zehaf-bibeau. You can see Vickers in the immediate after math, gun still in hand. And here he is on the Thursday on the floor of parliament, a standing ovation for the man who ended the attacks. This morning, we're learning much more about the suspect. Police say they now believe he acted alone. His motive, thing this Muslim convert wanted to go to Syria and was frustrated that he was having trouble getting a passport. I'm not inside his head. But I think it was central to what was driving him. Reporter: Worth noting, he had a long rap sheet including drug and robbery charges. Also this morning, getting a sense of how close the shooter came to Stephen Harper, the prime minister of Canada, once he stormed the parliament building. The Gunn gunman came through this entryway, tangling with some of the garuards. Shots were fired, and he was running with bullets flying at him down this hallway. This is the incredible part. He ran past these two rooms, filled with members of parliament. And in fact in this room was the prime minister himself. This member of parliament was trapped too in a small room with her 2-month-old baby. Were you terrified? Of course. How to make sure the baby was not yell interests and crying. I did not want anyone to find us. Reporter: And this morning, an amazing account of what happened in the room where the prime minister was in the parliament building during the rampage. According to a newspaper, he was hidden in a closet while other members of parliament took the various flags around the room, snapped the flag poles, turned them into spears and started guarding the door. Imagine that, you have one of the most powerful men in the free world while men with spears are guarding him. That's quite a scene. All right, Dan, good to have you in ottawa. And now to the scary scene

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

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