The Vancouver Sun said Bibeau was charged in Vancouver for an unspecified crime in 2011.
While Bibeau was killed, there is reportedly at least one other suspect at large.
Ottawa police spokesman Chuck Benoit told CBS that two or three gunmen may have been involved.
No motive has been identified for the attacks, although some are linking them to an ISIS-related incident on Monday.
A picture allegedly showing Zehaf-Bibeau emerged on Twitter soon after the identification, but hasn’t been confirmed.
A witness told Reuters that the gunman was dressed in all black with a scarf over his face.
A Canadian parliament official described the gunman to BBC as looking “Arabian” with “long hair and a small beard.”
Tony Zobl, 35, told the Canadian Press news agency that he witnessed the soldier being gunned down from his fourth-floor window directly above the National War Memorial, a tall granite cenotaph, or empty tomb, with bronze sculptures dedicated to those who died in World War I.
“I looked out the window and saw a shooter, a man dressed all in black with a kerchief over his nose and mouth and something over his head as well, holding a rifle and shooting an honor guard in front of the cenotaph point-blank, twice,” Zobl said.
“The honor guard dropped to the ground, and the shooter kind of raised his arms in triumph holding the rifle.”
Story developing ...
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