A vehicle exploded on Wednesday on the Rainbow Bridge linking Canada with the United States at Niagara Falls.

 
The incident prompted authorities to close that border crossing and the three others between western New York and southern Ontario, officials said.

The vehicle’s driver and a passenger were killed in the explosion, and one U.S. Customs and Border Protection (CBP) officer was injured, a person with knowledge of the situation told Reuters.

Investigators ruled out a bomb as the cause, but the possibility of terrorism had yet to be discounted because circumstances of the incident remained undetermined, according to the source, who asked to remain anonymous in order to discuss the matter.

“It’s not being ruled out because we really have no idea what happened,” said the source.

U.S. Senate Majority Leader Charles Schumer of New York said that according to an FBI briefing he received, “Initial reports indicate the two people were killed in the car, but nothing’s been determined on their identity or motive.” #featured #ticker today