Ottawa police increase foot patrols after Brussels explosions

Ottawa police will increase the frequency of foot patrols at popular gathering spots in the city following Tuesday's deadly explosions in Brussels, according to the force's superintendent responsible for emergency operations.

• Brussels airport, subway hit by explosions, killing at least 34
• LIVE BLOG:Brussels bombings: Follow live events here

"We've told our officers at the airport, the train station, the bus stationand downtown to remain vigilant.We've asked them to do morewalk-throughs," said Supt.ScottNystedt.

In Toronto,police also stepped up their presence at Union Station.

Despite the added patrols, Nystedt said there's nothing to indicate a heightened risk of an attack in Ottawa following the attacks in Brussels.

"We have been briefed by RCMP and CSISin regards to threat levels. There are no changes [to threat levels] in Ottawa, or even in Canada at this point."

MeanwhileOttawa Mayor Jim Watson announcedthe city will raise the Belgian flag at city hall for three days to mourn the lives lost in Brussels,and the city ofGatineauhas lowered its flag at city hall to half-mast.