Gunman Kills 1 in Ottawa: Pictures

Armed RCMP officers head towards the Langevin Block on Parliament Hill following a shooting incident in Ottawa. REUTERS/Chris Wattie

A Canadian soldier who was shot outside the war memorial on Parliament Hill is tended to in Ottawa. REUTERS/Daniel Thibeault/CBC

Police and medical personnel moving a wounded Canadian soldier into an ambulance at scene of shooting at National War Memorial. MICHEL COMTE/AFP/Getty Images

Police officers take cover near Parliament Hill following a shooting incident. REUTERS/Chris Wattie

A still image captured from video footage shows police officers responding to shooting attacks inside the Centre Block of the Parliament buildings. REUTERS/The Globe and Mail

The Conservative Party caucus room shortly after shooting began on Parliament Hill. REUTERS/MP Nina Grewal

Armed RCMP officers guard the front of Langevin Block on Parliament Hill following a shooting incident. REUTERS/Chris Wattie

Soldiers lock the gates at the John Weir Foote V.C. Armouries in Hamilton, Ontario after a soldier believed to be from the base was killed in an attack in Ottawa. GEOFF ROBINS/AFP/Getty Images

Armed RCMP officers guard access to Parliament Hill. REUTERS/Chris Wattie

Armed RCMP officers approach Parliament Hill. REUTERS/Chris Wattie

Armed RCMP officers approach Centre Block on Parliament Hill. REUTERS/Chris Wattie

Police officers control traffic on Parliament Hilll. REUTERS/Chris Wattie

Flowers at the gate of the John Weir Foote V.C. Armouries in Hamilton where it is believed that the soldier who was killed in the attack at the War Memorial in Ottawa this morning was based. GEOFF ROBINS/AFP/Getty Images