Canadians in Belgium have not been hurt and are being told to remain vigilant, while the Canadian government says it won't be raising its terror alert in response to a series of deadly explosions in Brussels on Tuesday.

Global Affairs Canada issued a travel advisory early Tuesday, in the wake of two deadly explosions in Belgium. Canadians are advised to "exercise a high degree of caution" in Belgium, "due to the current elevated threat of terrorism."

The attacks took place Tuesday morning, at the Brussels Zaventem Airport, and at the Maelbeek Metro subway station. More than two dozen people were killed in the attacks.

Stephane Dion, Canada's minister of foreign affairs, says there have been no reports of Canadians being affected by the attacks. He also praised the staff working at Canada's three embassies in Brussels. "I am very proud of their professionalism and dedication," Dion told reporters in Ottawa on Tuesday.

Dion said Canadians who require consular assistance in Brussels can call the embassy at 32 (2) 741-0611, or contact the Emergency Watch and Response Centre in Ottawa at by collect-call at 613-996-8885, or by email at

Public Safety Minister Ralph Goodale advised Canadians in Belgium to "stay alert, stay vigilant, (and) be aware of your circumstances and surroundings."

Speaking alongside Dion on Tuesday, Goodale said there does not appear to be any Canadian connection or involvement in the situation. He added Canada will also not be raising its terror threat alert at this time.

"The police and security services are on their guard and making sure that all of the necessary circumstances are under surveillance," he said.

Canadians in Brussels are also advised to monitor Belgium's Crisis Center account on Twitter.

Air Canada put out an advisory that flights to, from or connecting through Brussels may be delayed or cancelled due to the attacks.

On Tuesday, Air Canada diverted a Montreal-to-Brussels flight to land in Paris.

The Greater Toronto Airport Authority said in a statement that all flights between Pearson Airport and Brussels have been cancelled until Sunday.

American Airlines also issued a travel alert for Brussels, and offered to waive its one-time ticketing fee for those who change their travel plans to or through the affected area.

The Brussels Airport has suspended all operations for the day, following a pair of explosions thought to have been the result of terrorism.

Belgium is currently at its highest terror threat level.