article_snippet: The gunman was later shot to death by the Sergeant-at-Arms of the House of Commons just steps from where Canada's prime minister and members of Parliament were meeting .
article_snippet: Royal Canadian Mounted Police intervention teams responded to the shooting after gunfire was heard .
article_snippet: Gunfire breaks out in the Ottawa Parliament's Centre Block building .
article_snippet: Multiple gunshots ring out inside the Ottawa Parliament's Centre Block building and a reporter says a reporter witnesses a body lying motionless on the ground outside the Library of the Ottawa Parliament's.
article_snippet: A police source confirms that there is an 'active shooter' situation currently underway inside the Ottawa Parliament's.
article_snippet: 10.00am: Heavily armed rapid response teams arrive at the Ottawa Parliament's Centre Block building .
article_snippet: Parliament Hill is put into official lockdown .
article_snippet: Reports start emerging that the gunman at Parliament's Centre Block was shot and killed .
article_snippet: Prime Minister Stephen Harper is confirmed to no longer be on the premises of Parliament Hill.
article_snippet: 10.53am: RCMP advises citizens to 'stay off rooftops and away from windows in the downtown core' 10.54am: