So far we have reports of a car entering Canada from the US side or entering the US from the Canadian side, with Fox News reporting the car was full of explosives while there are reports of no explosives in the car.

Best to wait and see probably.

The 6 pm news here said no terrorism, it all happened on the American side, a speeding car hit several customs/border buildings. It burst into flames, 3 people in the car killed and a Border Guard hit and taken to hospital.

Because the people in the car were killed, no-one really knows why.