An Acela express train heading from New York to Boston struck and killed a person on the train tracks in Old Lyme on Monday morning.
The train struck the man on the tracks near Buttonball Road in Old Lyme at 8:42 a.m.
State police said he was found dead at the scene.
Amtrak service from Union Station in New Haven to South Station in Boston has been suspended, the northeastern region Amtrak line tweeted, and service is temporarily disrupted in both directions.
Mike Tolbert, a spokesperson for Amtrak, said the man was a "trespasser" on the tracks and he was struck around four miles from Old Saybrook.
None of the train's crew or 246 passengers were injured.
Amtrak Police are investigating.