Canada Shooting Developments - October 23, 2014

Canada's Prime Minister Stephen Harper and his wife, Laureen Harper, lay flowers at the National War Memorial in downtown Ottawa October 23, 2014.

Prime Minister Stephen Harper shakes hands with Sergeant-at-Arms Kevin Vickers, who shot and killed a gunman who had rampaged through the parliament building, in the House of Commons in Ottawa, Oct. 23, 2014.

Police officers search a man arrested after approaching police tape near the National War Memorial while Prime Minister Stephen Harper paid respect to Cpl. Nathan Cirillo at the memorial in Ottawa, Oct. 23, 2014.

Canada's Members of Parliament stand in the chamber of the House of Commons in Ottawa, Oct. 23, 2014.

Police perform a thorough search of the area around the National War Memorial in downtown Ottawa, Oct. 23, 2014.

A man wipes a tear from his eye after paying his respects at the National War Memorial in downtown Ottawa, Oct. 23, 2014.

Flowers, momentos and well wishes are placed at the National War Memorial in downtown Ottawa, Oct. 23, 2014.

Canada's Prime Minister Stephen Harper speaks during a nationally televised address on CBC in this still image taken from video in Ottawa, Oct. 22, 2014.