A 23-year-old man was killed early Saturday morning in a single car crash in Kittery.

WABI-TV says the accident happened around 1 a.m. on the Dennett Road. The car struck a tree, trapping the driver inside the vehicle. He was taken by LifeFlight to Maine Medical Center with severe head trauma, and passed away around 5:00 in the morning.

The driver's name hasn't been released, but police say he is a Serbian national who was working in Maine on a work visa. Police continue to investigate the accident.