NEW YORK, November 22. /TASS/. No traces of explosives or explosive devices have been found after a primary survey of the car blast site on the Rainbow Bridge connecting the United States and Canada in Niagara Falls, NBC reported.

According to the TV channel, a car caught fire and exploded after ramming a checkpoint structure at a high speed.

Fox News reported earlier that two people has died in the car blast and one border officer had been injured. The FBI is probing into a terror attack theory among others.

Commissioned in 1941, the 440-meter Rainbow Bridge is located near the Niagara Falls and links Canada and the United States.