Two employees of CSX Transportation died last night after being struck by an Amtrak train in Northeast Washington, D.C.

News sources reported that the accident occurred outside Union Station just before midnight. The names of the victims have not yet been released.

No injuries were reported among the 175 passengers and crew members aboard the train. Amtrak service between Washington, D.C. and Philadelphia was suspended after the incident. It was expected to resume sometime today, with residual delays.

The two were initially believed to be trespassers on railroad property, but a company spokesman later confirmed that they were CSX employees.

There is no word on why they were on the tracks at the time they train was passing by. The incident is under investigation.