The Buffalo Field Office of the FBI says no explosive materials were found and that no terrorism nexus was identified relating to an incident Wednesday involving a vehicle that left two people dead on the Rainbow Bridge at the U.S.-Canada border crossing.

They add that they have concluded their investigation into the incident, and that the matter has been handed over to Niagara Falls Police as a traffic investigation.

The latest from the FBI backs what New York Gov. Kathy Hochul said earlier Wednesday, that there was no indication of a terrorist attack.

"At this time, there is no indication of a terrorist attack," she said. "Let me repeat that: At this time, there is no indication of a terrorist-involved attack here at the Rainbow Bridge in Western New York."

"I saw the video of an airborne vehicle that was absolutely surreal," said Hochul. "You actually had to look at it and say, 'was this generated by artificial intelligence?' because it was so surreal to see how this vehicle went."

Hochul added that the driver who was killed in the crash was from Western New York.

“I first thought it was an airplane,” said witness Rickie Wilson. “It looked like slow motion. And I say, ‘my god, it’s a car. It’s a vehicle and it’s flying through the air.' [The vehicle] hit the concrete barrier … it went airborne. The vehicle began to turn sideways, and went under something overhead and then it hit something over there. And then all of a sudden, black smoke.”

All bridges along the Niagara River except the Rainbow Bridge have now reopened, according to U.S. Customs and Border Protection.

The Buffalo and Niagara Falls airports are still fully operational, however, Niagara Frontier Transportation Authority (NFTA) Police will continue to maintain an increased security presence during holiday travel.

This is a developing story and will be updated as more information becomes available.