Terrific US Train Crash

Amtrak train goes off rail in Philadelphia, 6 people dead.

An Amtrak train that was heading to New York city derailed and tipped over in Philadelphia on Tuesday night, destroying the front of it, killing six people, and injuring several more. Some passengers rescued through the window

Mayor Michael Nutter, who confirmed the deaths, said the scene was horrific. "It is an absolute disastrous mess," he said. "Never seen anything like this in my life." Firefighters said dozens of people were hospitalized and six were critically injured on Amtrak train in Philadelphia, Pennsylvania May 13, 2015.

Emergency workers look through the remains of a derailed Amtrak train in Philadelphia, Pennsylvania May 13, 2015. Officials survey the site of a derailed Amtrak train in Philadelphia, Pennsylvania May 13, 2015.

City-bound train carrying 243 people to derail at about 9:30 p.m. EDT Tuesday (0130 GMT Wednesday).The accident left rail cars mangled, ripped open and strewn upside down in the city's Port Richmond neighborhood along the Delaware River. Police officers enter a SEPTA bus carrying survivors of an Amtrak train derailment

The cause of the derailment was unknown, but Amtrak said it was investigating. The area where the derailment occurred is known as Frankford Junction and has a big curve.

Rescuers search for injured people inside the derailed Amtrak train in Philadelphia May 12, 2015