Ottawa (AFP) - 18:38 GMT - Tomb of the Unknowns - CNN reports that the US military has instituted additional security at the Tomb of the Unknowns at Arlington National Cemetary near Washington.
18:33 GMT - More shooters? - Police end their press conference without confirming whether there are still shooters at large in the city.
18:25 GMT - Mayor - "Today is a sad and tragic day for our city and our country," says Jim Watson, the mayor of Ottawa, as he expresses his condolences to the soldier's family.
18:17 GMT - Seeking witnesses - Police say they are looking for witnesses to come forward with details of the attacks.
18:05 GMT - Still on lockdown - Police say the operation is ongoing "and there is no one in custody at this time. Stay away from the downtown area while the operation continues."
18:03 GMT - No mall shooting - Police confirm two shootings, one at the War Memorial and one on Parliament Hill, but say that "contrary to earlier reports no incident occurred near the Rideau Centre."
18:01 GMT - Gunman dead - POLICE CONFIRM ONE GUNMAN IS DEAD
17:56 GMT - Obama calls - US President Barack Obama talks with PM Stephen Harper about the shootings
17:50 GMT - Press Conference - Officials from the Royal Canadian Mounted Police (RCMP) and the Ottawa Police will provide an update on the current operation at 2:00 pm (1800 GMT). Media is warned of enhanced security at the event.
17:28 GMT - Malala event canceled - Malala Yousafzai, the 17-year-old Pakistani who recently won the Nobel Prize for Peace for advocating for girls' eduction, was set to mark getting honorary Canadian citizenship, but the Globe and Mail is reporting that the event has been canceled.
She was named an honorary Canadian a year ago but was to celebrate the honor with an event on Parliament Hill. Malala, who survived being shot in the head by the Taliban, won the prestigious Nobel Prize for championing children's rights.
17:22 GMT - Obama to call Harper - White House spokesman Josh Earnest says that US President Barack Obama is trying to arrange to speak with Prime Minister Stephen Harper as soon as possible.
17:14 GMT - Hockey game? - The National Hockey League says it has not decided whether to start a hockey game between the Toronto Maple Leafs and the Ottawa Senators, due to start in about six hours,
"We are monitoring the situation in Ottawa and have been in touch with both Clubs. As in all cases regarding potential game postponements, we will follow the lead of the local authorities."
17:03 GMT - US Embassy closed - The US State Department issues a message to Americans in Canada and closes the US Embassy near Parliament Hill.
"There was a shooting at Parliament Hill in Ottawa earlier today. Both Parliament Hill and the US Embassy are currently on lockdown. We will send out an update once further information is available." the embassy says.
16:56 GMT - Condolences - Employment Minister Jason Kenney tweets his reaction to the soldier's death:
"Condolences to family of the soldier killed and prayers for the parliamentary guard wounded. Canada will not be terrorized or intimidated," @kenneyjason says.
16:50 GMT - Mall shooting - Police confirm another shooting at the nearby Rideau Mall in downtown Ottawa, the CBC reports.
16:48 GMT - Solidier dead - CANADIAN SOLDIER SHOT NEAR PARLIAMENT DIES
16:47 GMT - Air defenses on alert - US and Canadian air defenses have been placed on heightened alert. the North American Aerospace Defense Command (NORAD) "is taking appropriate and prudent steps to ensure we are adequately postured to respond quickly to any incidents involving aviation in Canada," an offcial tells AFP.
16:28 GMT - NORAD - The North American Aerospace Defense Command, knows as NORAD, is put on heightened alert
16:15 GMT - Obama briefed - In Washington, a White House official says, "The president has been briefed," on the attack.
16:09 GMT - MP describes scene - Liberal MP John McKay, who had been sheltering inside the building but has since been evacuated, tells AFP that he had just taken off his jacket to go into caucus when he heard shots.
"I hear this 'pop, pop, pop,' possibly 10 shots, don't really know. I thought it was dynamite or maybe construction rather than anything else.
"Suddenly the security guards come rushing down the hallways and usher us all out to the back of the parliament buildings. We're standing around talking when one of the construction people said to us it's probably a better idea to stand behind the monuments so if they're in the inside shooting out, we'll got a bit a better chance."
"After that we got ushered off the hill, and then we find out about the soldier. This is the kind of day that changes everything," McKay said.
"Parliament is the people's house. Ultimately it is the house of our democracy. Access is kind of fundamental... I don't really want to think about, but I'm going to be forced to think the implications of heightened security, all of the stuff that we do in the name of security, and the way it will affect our dialogue about how we live in this country."
15:55 GMT - Terror alert - The attack comes just one day after Canada raised its national "terrorism" alert. The level was raised from low to medium after authorities said a man they believed to be "radicalized" struck two officers with his car Monday, but authorities said the heightened alert was not "the result of a specific threat."
"This 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," Jean-Christophe de Le Rue, a spokesman for the Public Safety Ministry said Tuesday.
The assailant in Monday's attack was identified as 25-year-old Martin Couture-Rouleau, who was briefly detained at a Canadian airport last July when he sought to fly to Turkey, federal police said.
Police did not have enough evidence to charge him with seeking to join a terrorist group abroad and released him.
15:52 GMT - Shooter dead - Police kill at least one of the shooters involved in the attack, according to CBC television and a politician who was inside the building. MP Maurice Vellacott tells AFP that House of Commons security has told one of his aides that a suspect had been killed inside.
15:42 GMT - WELCOME to AFP's Live Report on the shooting on Parliament Hill in Ottawa, Canada. The area remains on lockdown as police search for shooters, as many as three, on the roof of parliament.
Video footage posted online by the Globe and Mail newspaper showed police ducking for cover as they advanced along a stone hallway, loud gunfire echoing among the gothic columns.
The attack began when someone shot a solider at a war memorial outside the building and then ran inside. Police raced to seal off the building and the office of Canadian Prime Minister Stephen Harper, who was in the area. Harper left the scene and is "safe," his spokesman Jason MacDonald said.
The incident came two days after a 25-year-old driver ran over a soldier, killing him before being shot dead by police, in what the government said was a terrorist attack.