Investigators Uncertain Anything Hit Train Before Derailment

PHILADELPHIA (AP) — Federal authorities say they're uncertain if anything struck the windshield of an Amtrak train before it derailed in Philadelphia, but they haven't ruled out the possibility.

Investigators, however, are certain a gunshot did not strike the train before the May 12 derailment, which killed eight people and injured more than 200 others.

FBI agents performed forensic work on a grapefruit-sized fracture on the left side of the Amtrak locomotive's windshield, and the National Transportation Safety Board says they found no evidence of damage that could have been caused by a firearm.

The developments came Monday as trains began running to New York again for the first time in nearly a week.

The NTSB says it could be a year before it determines the probable cause of the derailment.

(Story by: Michael R. Sisak, The Associated Press)