US-Canada border explosion may have been a medical or mechanical episode, cops say

Kurt P Villani and Monica Villani of Buffalo, New York, died when their Bentley flew through air and exploded into flames

The investigation of a car crash and explosion at a Niagara Falls, New York, border checkpoint on Wednesday - which killed the married couple inside the vehicle - is examining whether mechanical or medical issues were to blame, according to reports.

That detail surfaced as officials identified the Rainbow Bridge crash victims as Kurt P Villani and Monica Villani, both 53. The Villani family owns several hardware stores as well as a lumber business around the Buffalo, New York, region.