Canadian police probe gunman

Canada's capital faced a third day of heightened security on Friday as police searched for any clues that the man who shot and killed a soldier and charged into the Parliament building might have had help in plotting his attack.

The Royal Canadian Mounted Police ordered a detail of officers to remain with Prime Minister Stephen Harper 24 hours a day, seven days a week, after it was revealed that he hid in a closetlike room briefly during Wednesday's attack.

Michael Zehaf-Bibeau, a 32-year-old Canadian with a record of criminal drug violations was named by police as having carried out the attack. He had undergone a "radicalization process" and applied recently for a passport, hoping to travel to Syria, police said.