The gunman who attacked Canada's capital Wednesday and killed Canadian soldier has been identified as Michael Zehaf-Bibeau, U.S. officials told CBS News. He opened fire inside the nation's parliament. Zehaf-Bibeau, a Canadian born in 1982, shot Corporal Nathan Cirillo who was standing guard at the National War Memorial. Zehaf-Bibeau then went inside the main parliament building and opened fire (as captured on video below). House of Commons Sergeant-at-Arms Kevin Vickers shot Zehaf-Bibeau dead. Justice Minister Peter McKay praised Vickers, 58, for his "selfless act."
Though law enforcement previously stated they believed there was more than one assailant, they refused at a press conference to confirm whether there were multiple gunmen or if any were still on the loose. The attack comes two days after a radicalized Muslim struck two Canadian soldiers with his car in Quebec, killing one of them. Earlier on Wednesday, the Canadian government raised its terror threat alert from low to medium. Law enforcement asked citizens to come forward if they witnessed the events and to remain vigilante towards any suspicious behavior. They declared the situation as "fluid" with the "investigation ongoing.”