Authorities are still searching for the driver of the truck that struck and killed a Grantsville boy Friday night.

Also, the body of a Moab man killed Tuesday night when his car plunged into the Colorado River near Moab was found Friday and a young Orem woman died Saturday morning after the truck she rode in collided with a cow near Fillmore.Killed in the accidents were:

Craig Lowton, 11, Grantsville.

David S. Laycock, 32, Moab.

Kimberly Johnson, 19, Orem.

The Utah Highway Patrol reported that Lowton was riding a bicycle east on the side of U-183 in central Grantsville when the truck struck and killed him.

The truck, also going east, was straddling the emergency lane and hit the boy without stopping at about 6:30 p.m. Lowton was pronounced dead at Tooele Valley Hospital, a UHP dispatcher said.

The truck believed involved in the accident was later found abandoned at 900 East and 700 South in Salt Lake City. The only description officials released of the driver is that he is male.

Laycock lost control of his car on U-128 Tuesday about 7:30 p.m. and the car plunged into the river at a spot where the road has a bad curve, said dispatcher Mike Tracy.

Johnson died Saturday morning at LDS Hospital in Salt Lake City of injuries suffered when the small pickup truck in which she was riding hit a cow Friday night on I-15 just west of Fillmore.

Kimberly Evans, 19, Payson, and the driver of the truck, Mike Wilson, St. George, were hurt, said Utah Highway Patrol Trooper Paul Mitchell.

They were treated at Fillmore Community Medical Center and released Saturday morning, said Elva Richman, administrative assistant at the medical center.

Mitchell said the fatality victim and the other two youths were college students.

He said the cow, which was apparently standing in the roadway, died in the accident, which was reported about 9:15 p.m. Friday. The driver was wearing a seat belt but the two girls were not.