A 21-year-old Allegheny County man was killed Saturday night when he lost control of his car and it crashed into a tree in West Deer.
The Allegheny County medical examiner's office identified the victim as Trenton Hutton of Gibsonia.
A spokesman said the accident happened at 8:22 p.m. on Middle Road Extension. Mr. Hutton was pronounced dead at the scene at 8:40 p.m.
No one else was injured in the accident.