Toronto police have boosted security in the downtown core following attacks in central Paris that have left at least 100 people dead and many injured.

“We are working closely with national and international security agencies,” Toronto police told the Star.

“We are monitoring the situation closely to see to see if there are any changes to be made to Toronto's security.”

Police have deployed more officers in the downtown core area “as precautionary measure.”

The federal government is asking Canadians who are in France and need emergency assistance to call Foreign Affairs at 613-996-8885 or via email at sos@international.gc.ca .

The travel and tourism department is warning Canadians in Paris to be "extremely vigilant."