Investigators unsure anything struck train before Amtrak derailment

Federal authorities said Monday they’re unsure anything struck the windshield of an Amtrak train minutes before a deadly derailment in Philadelphia last week, adding another twist to the investigation the day trains started running to New York again.The National Transportation Safety Board said it has not ruled out the possibility an object may have struck the windshield but is uncertain the locomotive was hit at all 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 said they found no evidence of any damage that could have been caused by a firearm. The developments came as trains began running to New York again for the first time in nearly a week.