No sign of terrorism in blast that killed 2 at U.S.-Canada border in Niagara Falls, governor says

A deadly explosion near the New York-Canadian border after a car went airborne has been referred to Niagara Falls police as a traffic investigation after no explosives or connection to terrorism were found, the FBI said Wednesday night.

Two people in the car were killed in the fiery incident on the Rainbow Bridge, which leads into and out of Canada at Niagara Falls, that occurred minutes before 11:30 a.m., officials said.

It happened on one of the busiest travel days in the U.S. as people across the country hit the road for Thanksgiving, and as there was a heightened awareness due to the holiday.

The White House closely monitored developments, an official said, and the Department of Homeland Security said it was in touch with Canadian counterparts.