Investigation into Niagara Falls’ Rainbow Bridge explosion wraps – and many questions remain
![Investigation into Niagara Falls’ Rainbow Bridge explosion wraps – and many questions remain](https://static.independent.co.uk/2023/11/24/18/EXPLOSION-FRONTERA_EEUU_CANAD%C3%81_64232.jpg?width=1200&auto=webp)
Investigators don’t know whether a human or mechanical error caused the fatal crash
Investigators don’t know whether a human or mechanical error caused the fatal crash