As investigators are quickly working to determine what exactly occurred leading up to a vehicle explosion at the Rainbow Bridge border crossing between the United States and Canada, and as surveillance videos and witness videos are reviewed more information is becoming available about the moments before the explosion.

While initial reports were that the vehicle came from Canada into the United States, some witnesses say that it came from the U.S. side, leaving a 7-11 a few blocks from the bridge then speeding down Niagara Street on the wrong side of the road before slamming into CBP’s secondary checkpoint.

The Google Maps birds-eye view shows more of the scene.