A pair of fatal automobile accidents killed seven people on Utah highways Tuesday.

The first accident, at 12:44 a.m., near Beaver took the lives of three unidentified men. The second, about six hours later near Wellington, killed three Salt Lake area teenage girls, Utah Highway Patrol Lt. Verdi White, II said.Killed were: Heidi K. Warner, 19, West Jordan;

Kimberly T. Prisbey, 17, West Valley City;

Melissa L. Zatinsky, 19, Salt Lake City;

Eugene McClean, 75, Vernal.

Police were still trying Wednesday to identify the three men killed near Beaver, White said.

The girls were killed about 6:35 a.m. on U-6 about 16 miles east of Wellington in Carbon County when their westbound Kia crossed the center line and collided head-on with an eastbound Jeep Cherokee.

The driver of the Cherokee, Max McClean, 65 of Vernal was taken to Utah Valley Regional Medical Center in Provo, where he was listed in serious but stable condition Wednesday.

McClean's passenger and brother, Eugene McClean, 75, Vernal, was flown by helicopter to LDS Hospital, where he died in the emergency room, a hospital spokesman said.

Crash investigators found alcohol at the scene and have not ruled that out as a factor in the accident, White said. The accident closed the highway for about an hour.

Earlier that morning, the three unidentified men were headed south on I-15 near milepost 115 in a pickup truck when the driver drifted off the road to the right, overcorrected and crossed into the northbound lanes where the truck collided with a Yellow Freight semitrailer truck.

One of the men was ejected from the pickup and may have been run over by another passing motorist. Crash investigators believe the other men were killed instantly. None appeared to have been wearing seat belts, White said.

The crash appears to have occurred at speeds in excess of 75 mph, White said. The interstate was closed four about four hours while police investigated the accident.

Police are having a difficult time identifying the men because of the severity of their injuries and because very little identification was found in the pickup, which has California license plates, White said.

The driver of the semi, William R. Brown, 39, Los Lunas, N.M., was seriously injured and was taken to Valley View Medical Center in Cedar City. A passenger, Donald T. Parke, 60, Albuquerque, was airlifted to a Salt Lake area hospital in serious condition.

Two other vehicles driving in the area at the time of the crash were damaged by debris from the crash. But no other injuries were reported.