Five individuals were killed and two seriously injured in separate accidents Wednesday.

Killed were:Anita Bennett, 54, Sandy.

Donald Kitchin, 42, Holladay.

Joseph A. Ferrari, 34, Holladay.

Lori Bogedahl, 34, Murray.

Shelly Elder, 37, Nephi.

- Shortly before 6 p.m., Bennett was driving a Jeep south on Wasatch Boulevard when for an unknown reason the vehicle swerved left and crashed into a large pine tree at 8350 South, said Salt Lake County deputy Craig Carroll.

Bennett was pronounced dead at the scene. Two passengers - Bennett's son, Nick Roe, 13, and a friend, James Melton Jr., 13, - were also injured.

Both boys were taken by medical helicopter to Primary Children's Medical Center. Roe was listed in serious condition, and Melton was listed in critical condition Thursday morning.

None of the victims was wearing a seat belt. No other vehicles were involved.

- About 7:15 a.m., Ferrari was driving his Chevy Blazer north on I-15 at mile post 134, near Cove Fort, Millard County, when he apparently fell asleep and drifted off the right side of the road, said Utah Highway Patrol trooper Steven Esplin.

The vehicle hit an embankment, vaulted 35 feet and came down head-on into a cement culvert, Esplin said.

Ferrari was extricated from the vehicle but died at the scene. Two passengers, Kitchin and Bogedahl, were already dead when emergency crews arrived, Esplin said.

None of the victims had been wearing seat belts. All remained in the vehicle. Police believe that alcohol and/or drugs were a factor in the accident, Esplin said.

- Elder was killed Wednesday after his truck was struck by a Union Pacific train.

He was driving east on Center Street in Nephi across the train tracks when the truck was hit. The impact of the collision pushed the truck into an irrigation ditch, authorities said.

Rescuers pulled Elder from the vehicle, and he was taken to Central Utah Medical Center, where he was pronounced dead.