Two killed in crash at US-Canada border, officials say no sign of terrorism

A light coloured vehicle, top centre, flies over a fence into the Rainbow Bridge customs plaza in Niagara Falls (Customs Border Protection via AP)

A vehicle speeding toward a US-Canada bridge from the American side crashed and exploded at a checkpoint in Niagara Falls on Wednesday, killing two people and prompting the closing of multiple border crossings for hours.

Authorities were not sure what spurred the wreck but said there were no signs it was a terror attack.