PowerPoint Show by Andrew

Authorities continue to investigate the scene of a fatal train derailment on a route between Washington and New York last night.

The death toll stood at seven Wednesday afternoon with more than 200 injured from the accident that occurred in Philadelphia at a notorious curve on the line.

Emergency personnel work the scene of a deadly train wreck on May 12 in Philadelphia.

Emergency personnel transport a person at the scene of the train wreck.

Emergency responders search for passengers following an Amtrak train derailment in the Frankfort section of Philadelphia, Pa., on May 12.

Police and Fire Rescue personnel work the scene of a deadly train wreck on May 12 in Philadelphia.

A crime scene investigator looks inside a train car after a train wreck on May 12 in Philadelphia.

Emergency personnel help a passenger at the scene of a train wreck on May 12 in Philadelphia.

First responders help an injured passenger.

Emergency personnel work at the scene of a deadly train derailment on May 13 in Philadelphia.

Philadelphia Mayor Michael Nutter, center right, hugs Lori Dee Patterson, a nearby resident, after he spoke at a news conference near the scene of a deadly train derailment on May 13 in Philadelphia.

Investigators and first responders work near the wreckage of an Amtrak passenger train carrying more than 200 passengers from Washington, D.C. to New York that derailed late last night on May 13 in north Philadelphia.

Men walk towards the site of a derailed Amtrak train in Philadelphia, Pa., on May 13.

The remains of an Amtrak train that derailed on its way from Washington, D.C. to New York City are seen just outside Philadelphia on May 13.

Emergency personnel work at the scene of a deadly train wreck on May 13 in Philadelphia after a fatal Amtrak derailment Tuesday night, in the Port Richmond section of Philadelphia.