Breaking Newspublished at 22:23 British Summer Time 22 October 2014
Canadian media quoting US and Canadian officials have identified the dead Ottawa gunman as Michael Zehaf-Bibeau.
There have been two shooting incidents in Ottawa - at the National War Memorial and inside parliament
A soldier guarding the war memorial was shot and later died of his injuries
A gunman has been killed in the parliament building, it is not clear if other gunmen are at large
Several buildings are on lockdown and residents have been told to stay away from windows and roofs
PM Stephen Harper says "Canada will never be intimidated" and will "redouble our efforts" in fighting terrorist groups
Sherie Ryder, Yaroslav Lukov, Mike Hills, David Walker, Victoria Park and Bernadette McCague
Canadian media quoting US and Canadian officials have identified the dead Ottawa gunman as Michael Zehaf-Bibeau.
Canadian broadcaster CBC has a profile of Nathan Cirillo, external, the reservist soldier who was fatally shot at the National War Memorial in Ottawa.
Russ Siemens in Ottawa, Ontario
tweets, external: First flag I have seen at half mast #Ottawa pic.twitter.com/KwggvJ7CF8
Canadian media have named the soldier fatally shot at the war memorial as Cpl Nathan Cirillo. Canada's Globe and Mail, external spoke to a member of his family.
Just to recap on what we know: Shots were fired at two locations, the National War Memorial where a soldier was fatally injured, and in parliament where an attacker was killed in a gunfight. Police said reports of gunshots at a shopping centre proved to be false but parts of the city centre are still in lockdown and it is unclear if other suspects are at large.
This picture of armed police on a rooftop in central Ottawa was taken by Kashy_B who tells the BBC: "We're locked in and no-one can get in or out."
tweets, external: The Canadian National Anthem will play ahead of the Pittsburgh Penguins game tonight as a show of support for the tragic events today.
tweets, external: Sgt at arms Kevin Vickers - nicest guy you'll ever meet. I am lucky to call him a friend. Today he is also our hero and we are 4evr grateful
Kevin Vickers, Sergeant-at-Arms in Canada's House of Commons, is being hailed as a hero after reportedly shooting the assailant in parliament. Justice Minister Peter MacKay tweeted: "Thank God for Sgt at Arms Kevin Vickers".
RCMP in Ottawa, Canada
tweets, external: Anyone who has pics or videos of the sequence of events, surrounding today's shootings send to police at this link http://rcmp.ca/-hSn
tweets, external: Condolences to the family of the fallen officer in #Ottawa. He was a hero who bravely stood in defence of our country and our freedoms
tweets, external: A standing ovation for Ontario's Sergeant-at-Arms Dennis Clark, who keeps this chamber safe. #onpoli
tweets, external: In centreblock. I can hear shouting "Police! Hands up!" In outside hallway #OttawaShooting
The White House says President Obama has spoken by phone to Prime Minister Harper "to express the American people's solidarity with Canada". It says President Obama condemned "these outrageous attacks" and offered any assistance Canada needed in responding to them.
tweet, external: #OttawaShooting situation is fluid and ongoing. Remain vigilant and aware.