One person was killed and three others were injured in a one-car rollover Friday evening.

Killed was:Melanie Clark Hollar, 36, Ogden.

Hollar was killed when the 1984 Plymouth she was driving struck the center concrete divider on I-84 near Taggart, Morgan County. The vehicle then swerved off the right side of the interstate and rolled. None of the vehicle's occupants was wearing seat belts at the time of the wreck, according to Utah Highway Patrol trooper Ross Pace.

Hollar's 2-year-old son, Zach, was apparently riding on the lap of a passenger when the accident occurred, but remained in the vehicle during the collision. He was taken by helicopter to Primary Children's Hospital, where he remained in fair condition Friday.

Passengers Clay Teeter, 36, and Peter Terwilliger, 21, were ejected from the vehicle. Terwilliger, of Ketchum, Idaho, was treated and released from McKay Dee Hospital in Ogden.