Amtrack Trian Derailed

The FBI is being called in to determine if a projectile struck a commuter train before it crashed in the US city of Philadelphia this week, killing eight people.

Rescuers on Wednesday combed through the mangled wreckage of a derailed train in Philadelphia after an accident that left at least six dead, as the difficult search for possible survivors continued.

The FBI is being called in to determine if a projectile struck a commuter train before it crashed in the US city of Philadelphia this week, killing eight people.

Rescuers on Wednesday combed through the mangled wreckage of a derailed train in Philadelphia after an accident that left at least six dead, as the difficult search for possible survivors continued.