Two men were killed early Sunday in unrelated accidents involving a motorcycle fall on I-15 and a one-car crash in downtown Murray. Another man was killed Friday in Tremonton.

Those who were killed were:Todd R. Allen, 31, Bountiful.

William C. Vigos, 42, Salt Lake City.

D.L. Wilson, 27, Tremonton.

Allen was northbound on I-15 at 50th South about 1:40 a.m. when he apparently lost control of his motorcycle, fell and skidded across the freeway, said Utah Highway Patrol Trooper Wayne Boltis.

After falling, Allen was run over by someone driving a white sedan, Boltis added. The driver of the car left the scene of the accident and is being sought by area law enforcement agencies.

Allen was transported by air ambulance to LDS Hospital, where he was pronounced dead.

Murray Police Sgt. Scott Robinson said Vigos was northbound on 320 West at 5296 South at 5:40 a.m. when he apparently lost control of his car, hit a utility pole and then crashed into an office building.

Robinson said it appeared that Vigos, who was alone in the vehicle, was traveling at a high rate of speed. The driver was dead at the scene, he said.

Wilson was killed Friday night when his car hit a tractor at 10:20 p.m. on U-102 about two miles west of Tremonton, said Utah Highway Patrol Trooper Paul Stephens.

The victim was driving south when he hit the tractor driven by Craig Bingham, 17. Bingham was uninjured.