PHILADELPHIA -- Crews in Philadelphia are still working through the wreckage of a New York-bound Amtrak train that derailed last night, killing at least six people.
Train 188 from Washington D.C. went off the tracks around 9:30 p.m. It was due to arrive at Penn Station at 10:45 p.m.
The train was carrying more than 230 passengers and five crew members. Investigators say more than 50 people were injured, six of them critically.
Philadelphia Mayor Michael Nutter says he saw train cars that were completely overturned and ripped apart.
Former Pennsylvania Congressman Pat Murphy was one of many passengers who were on board and described a horrific scene inside.
"I saw everyone. I could see the blood on peoples faces. They can't move. Their knees were out. I just tried to do my best to help people get out of that car because it was smoking," Murphy said.
The area where the accident happened is called Frankford Junction and it has a big curve.
It's still not clear what caused the train to jump the tracks. The National Transportation Safety Board is sending investigators to the scene.
To get more information on family and friends who were on the derailed train, call the Amtrak Incident Hotline at 1-800-523-9101.
Meanwhile, the derailment means service changes for Amtrak along the Northeast Corridor. Service between New York and Philadelphia remains suspended. New Jersey Transit will honor Amtrak tickets between New York and Trenton. Amtrak says there will be modified service today between New York and Boston, and Washington and Philadelphia.