An Amtrak train struck and killed an 18-year-old Bucks County man early this morning near the Croyden train station in what was ruled a suicide, authorities said.

The victim, who lived in Croydon, was pronounced dead at the scene. Dr. Joseph Campbell, the Bucks County Coroner, said the young man left behind notes that made it clear he had committed suicide.

No injuries were reported on Amtrak's train 639, which had 40 passengers and crew aboard when it struck the man at 12:20 a.m., said Amtrak spokesman Steve Kulm.

The train departed New York City's Penn Station about 11:15 p.m. and was due to arrive in Philadelphia at 12:40 a.m.

Following the incident, the train was held in Croydon for two hours. Passengers transferred to a SEPTA train to finish the journey.

Contact staff writer Sam Wood at 215-854-2796 or samwood@phillynews.com.