On Wednesday morning, 32-year-old Canadian Michael Zehaf-Bibeau shot and killed Cpl. Nathan Cirillo as he stood guard at the Tomb of the Unknown Soldier.

Moments later, he stormed into the Parliament building with a blaze of gunfire before he was shot and killed by House of Commons Sergeant-at-Arms Kevin Vickers.

It was the second terrorist attack in Canada in three days, and once again, devotion to Islam was the motivation.

Investigators say they believe Zehaf-Bibeau is from Quebec, and is a new convert to Islam. His passport was recently seized after he was designated a "high risk traveler."

Canadian police are trying to determine if Zehaf-Bibeau acted alone or with others.

Meanwhile, in a televised address to his nation, Canadian Prime Minister Stephen Harper called Wednesday's attack an act of terrorism. He then gave a stern warning to other would be terrorists.

"Let there be no misunderstanding: we will not be intimidated. Canada will never be intimidated," Harper said. (Photo: PM Harper and wife lay flowers at National War Memorial/via NBC)

While President Barack Obama did not directly call the shooting an act of terrorism, he assured the public the United States will continue to work with Canada to thwart acts of violence and terror.

"Our national security teams are coordinating very closely, given not only is Canada one of our closest allies, but they're our neighbors and our friends," Obama said.

Wednesday's act of Islamic terror in Ottawa came just two days after another recent convert to Islam ran over two soldiers near Montreal with his car.

National security advisers and foreign policy experts on both sides of the border expect there will be more to come.

"I would not be surprised at all if there were more in Canada and across the West in general," Clint Watts, with the Foreign Policy Research Institute, said.

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