Rideau Center officials report no shooting at the mall, heightened security - CNN live report.
Soldier shot at War Memorial is alive and responding to treatment.
US Embassy in Ottawa in full lock-down
Ottawa University on Lockdown
Initial Investigation into Shooter not showing ties to Radical Islamists - CNN live report.

Apparently the gunman is in Rideau Center - Unconfirmed

Shooter still believed at large in downtown Ottawa.
Police searching cars leaving Ottawa trying to go to Quebec.
Report of additional shot fired near Chateau Laurier hotel, east of Parliament Hill.
Police going door to door on Sparks Street; downtown schools in lockdown.
All three main party leaders, Harper, Mulcair and Trudeau, reported safe.

Witnesses reported seeing a gunman firing at the Ottawa War Memorial and then running toward the government buildings, where more shots were heard.

A soldier has been wounded in the attack, Canadian media report.

The incident came hours after Canada raised its terror threat level following a fatal hit-and-run attack on two soldiers earlier in the week.

"Shots fired at War Memorial at 9:52am today; one person injured," Ottawa Police tweeted on Wednesday as a witness reported seeing authorities search from room to room for the suspect.

Police have told those in the vicinity to stay away from windows and roofs as they search for the suspect.

The gunman - said to be carrying a rifle - fired on soldiers guarding Canada's main war memorial and then ran into the parliament.

Additional shots were fired inside the parliament buildings, which is under lockdown.

There are no reports yet of anyone inside the building being hurt.

Earlier, Ottawa Police told the BBC there could be more than one shooter.

Meanwhile, Prime Minister Stephen Harper "is safe and has left Parliament Hill", his director of communications wrote on Twitter.

Senior government member Tony Clement said on Twitter shots were fired near an in-progress cabinet meeting in parliament.

A government official earlier said the raised threat level was in response to an increase in online "general chatter" from radical groups including Islamic State and al-Qaeda.

Ministry spokesman Jean-Christophe de Le Rue said on Tuesday that the increased level "means that intelligence has indicated that an individual or group within Canada or abroad has the intent and capability to commit an act of terrorism".

On Tuesday a Muslim convert was killed by Quebec police after deliberately hitting two soldiers in his car, killing one and injuring another.

A minister said it was a "terrible act of violence against our country".

Earlier this month, Canada announced plans to join the US-led campaign of air strikes against Islamic State (IS) militants in Iraq.