Two men were killed in separate car accidents in Virginia on Friday and Saturday, according to state police who said neither had been wearing seat belts.

The lastest crash occurred about 5 a.m.Saturday on Route 616 in Stafford County, about a mile south of Harwood Lane. Police said a 2000 Toyota Camry being driven south went off the road on a curve, went into a ditch, struck several mailboxes and a utility pole, and then overturned.

Virginia State Police said Philip Oliver, 20, of Fredericksburg, was pronounced dead on the scene. The cause is under investigation.

About 3:50 p.m. Friday, state police said a 2011 Hyundai Accent being driven north on Route 17 in Faquier County went off the right side of the road a half mile south of I-66.

Police said the car hit a fence and a tree, then spun around and went into a second tree. The driver was identified as Todd W. Nichols, 28, of Bentonville, Va.. Police said he was flown to Inova Fairfax Hospital,. where he died later on Friday.