Amtrak officials say the National Transportation Safety Board (NTSB) is leading the investigation of an incident after a train crash in Chester, Pennsylvania, USA.
Initially, Amtrak had suspended service between New York and Philadelphia, but around noon Sunday, services had been restored.
Two people were killed and 35 injured Sunday morning when an Amtrak train struck a backhoe and derailed south of Philadelphia, according to authorities.
Seven crew members and 341 passengers were on the train traveling from New York to Savannah, Georgia, when the lead engine disconnected from the tracks in Chester at about 8 a.m. according to Amtrak.
Two people, who were not passengers on the train, were killed, and at least 35 passengers suffered non-life-threatening injuries, said Chester Fire Department Commissioner Travis Thomas.
The pair who died were Amtrak employees.
Passengers said the collision between the train and the backhoe, followed by the derailment caused a fireball and a plume of smoke.