Police, bystanders and soldiers aid a fallen soldier at the War Memorial as police respond to an apparent terrorist attack on October 22, 2014 in Ottawa, Canada. A gunman is believed to have shot a soldier as he was standing guard at the National War Memorial in Ottawa, Canada, on Wednesday, October 22, 2014. It is believed police then chased the man into the main parliament building at Parliament Hill, where more shots were fired. Police are hunting the streets and buildings for further suspects and have asked the public to stay away from the area. There is also a report of shootings at the Rideau Centre mall in downtown, a short distance from the War Memorial. The wounded soldier was taken into an ambulance and treated by medical personnel and is condition is unclear. The incident comes after Canada raised its terror threat level from low to medium after a Muslim convert deliberately ran over two soldiers, killing one of them. (Photo by Wayne Cuddington/Postmedia/Barcroft Media/ABACAPress)

Paramedics and police wheel away a shooting victim at the National War Memorial near Parliament Hill in Ottawa Wednesday October 22, 2014. (Photo by Adrian Wyld/AP Photo/The Canadian Press)

The Conservative Party caucus room is shown shortly after shooting began on Parliament Hill, in Ottawa, Ontario, October 22, 2014. (Photo by MP Nina Grewal/Reuters)

Armed RCMP officers head towards the Langevin Block on Parliament Hill following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

Police officers take cover near Parliament Hill following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

A Royal Canadian Mounted Police vehicle passes the Fairmont Chateau Laurier as it leaves a secure area downtown following shootings in Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

Armed RCMP officers approach Centre Block on Parliament Hill following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

Armed RCMP officers guard the front of Langevin Block on Parliament Hill following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

A Ottawa police officer and service dog run up Metcalfe Street following shootings in downtown Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

A Ottawa police officer prepares a service dog following shooting incidents in downtown Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

A Ottawa police officer holds up a length of police tape for pedestrians leaving the downtown area following shooting incidents in Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

A Royal Canadian Mounted Police officer stands guard on Metcalfe Street following shootings in downtown Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

Armed RCMP officers approach Parliament Hill following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

A bomb disposal robot rolls towards Parliament Hill following shootings in downtown Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

Police approach a woman while clearing a downtown area following shootings in downtown Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

An Ottawa police officer attempts to clear people from an area on Metcalfe Street following shootings in downtown Ottawa October 22, 2014. (Photo by Blair Gable/Reuters)

Armed RCMP officers guard access to Parliament Hill following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

Armed RCMP officers head towards the Langevin Block on Parliament Hilll following a shooting incident in Ottawa October 22, 2014. A Canadian soldier was shot at the Canadian War Memorial and a shooter was seen running towards the nearby parliament buildings, where more shots were fired, according to media and eyewitness reports. (Photo by Chris Wattie/Reuters)

An ambulance is pictured alongside the Canadian War Memorial following a shooting incident in Ottawa October 22, 2014. (Photo by Chris Wattie/Reuters)

Emergency personnel tend to a soldier shot at the National Memorial near Parliament Hill in Ottawa on Wednesday October 22, 2014. The soldier was standing guard when an unknown gunman shot him. The gunman reportedly ran towards Parliament Hill, which is currently under lockdown and surrounded by security. Prime Minister Stephen Harper was rushed away from the building to an undisclosed location, officials in his office said. (Photo by Adrian Wyld/AP Photo/The Canadian Press)

A heavily armed RCMP officer takes position at the gate of 24 Sussex Dr., the official residence of the Prime Minister, on Wednesday, October 22, 2014. (Photo by Justin Tang/AP Photo/The Canadian Press)

Paramedics and police pull a victim away from the Canadian War Memorial in Ottawa on Wednesday October 22, 2014. (Photo by Adrian Wyld/AP Photo/The Canadian Press)

Police teams enter Centre Block at Parliament Hill in Ottawa on Wednesday October 22, 2014. (Photo by Justin Tang/AP Photo/The Canadian Press)

A Royal Canadian Mounted Police intervention team responds to a reported shooting at Parliament building in Ottawa Wednesday October 22, 2014. (Photo by Adrian Wyld/AP Photo/The Canadian Press)

People in the downtown area evacuate as emergency responders attempt to secure a portion of downtown Ottawa near Parliament Hill after a shooting took place in Ottawa, Ontario, Canada 22 October 2014. (Photo by Chris Roussakis/EPA)

An Ottawa police officer runs with his weapon drawn outside Parliament Hill in Ottawa on Wednesday October 22, 2014. (Photo by Sean Kilpatrick/AP Photo/The Canadian Press)

An police officer stands watch outside a Starbucks in Ottawa,Ontario after multiple shootings on October 22, 2014. Gunfire echoed through the Gothic halls of the Canadian parliament Wednesday as police shot dead a gunman suspected of killing a soldier guarding a nearby war memorial before storming the building. Police said an investigation was continuing, but did not confirm earlier reports that more gunmen were involved. Heavily armed officers backed by armored vehicles sealed off the building. (Photo by Peter McCabe/AFP Photo)

Police search cars and pedestrians as they leave the Alexandra Bridge and enter Gatineau, Quebec near the Parliament Buildings in Ottawa on Wednesday, October 22, 2014. (Photo by Patrick Doyle/AP Photo/The Canadian Press)

The National War Memorial is surrounded by police officers in Ottawa, Canada on Wednesday October 22, 2014 after a gunman opened fire killing a soldier before entering Parliament Hill and firing several shots in the building. Police shot dead the gunman and said an investigation was underway. Heavily armed officers backed by armored vehicles sealed off the building. There was no immediate word on the gunman's motivation, but the attack came a day after an alleged Islamist drove over and killed another soldier in what authorities branded a terrorist attack. (Photo by Lars Hagberg/AFP Photo)