One child was killed and three people injured in a rollover 20 miles north of Fillmore at 2:38 p.m. Saturday.

Killed was:Shanelle Southwick, 5.

The vehicle, driven by Anna Glauche, 61, was northbound on I-15 when it ran off the left side of the road. Glauche apparently lost control of the vehicle, and it rolled down the highway into a median strip, according to the Utah Highway Patrol.

Shanelle Southwick was partially ejected from the front right passenger's door.

Cindy Southwick, 30, and Glauche were injured. Cindy Southwick was airlifted to LDS Hospital in Salt Lake City, where she was listed in serious condition Saturday night.

Eighteen-month-old Mohiah Southwick received only minor injuries. She was transported by ambulance, along with her grandmother Anna Glauche, to Salt Lake City.

The Highway Patrol said the vehicle was registered in Ketchum, Idaho, to Glauche. Officers were not sure if the Southwicks were from Ketchum.

The UHP said speed and improperly fitted restraints may have been a factor in the level of injuries. The accident is still under investigation.