several US border crossings in Niagara Falls are currently closed due to a tragic vehicle explosion at Rainbow Bridge CTV news reports that Canadian government officials are treating the incident as potentially Terror related the US Federal Bureau of Investigations Buffalo field office is actively investigating the explosion that occurred on the US side of the Border although the exact number of fatalities is unclear but there have been confirmed deaths related to the incident additionally a patient with non on lifethreatening injuries from the explosion is receiving treatment at the hospital National Security sources have informed news that authorities are working to determine whether the incident is an isolated event or part of a larger threat