All but three of the six people injured in a hit-and-run accident after they had stopped to aid victims of another accident remain in a Cedar City hospital.

Robert Cook, 58, and Tina Dickerson, 29, two Corrections Department employees who were returning from delivering a prisoner and had stopped to help, were listed in good condition Monday at Valley View Medical Center. Susan Parker, who also stopped to help, also was listed in good condition. A nursing supervisor said the three should be released this week.Dr. Robert Quife, 31, and Paul Cassedy, 27, Laguna Beach, Calif., were released Sunday from Beaver Valley Hospital.

Also injured was Colorado City, Ariz., Town Marshal Sam Barlow who was treated and released following the accident.

Bertram Tillett, 19, Hill Air Force Base, remained in the Beaver County Jail for investigation of failure to stop and render aid at an injury accident. Tillett was arrested a short time following the accident by a Beaver County sheriff's deputy. Formal charges are pending.

The six injured people had stopped about 8 p.m. Friday to render aid to a St. George couple who's northbound car had skidded on ice and rolled over through the median of I-15, coming to rest on the southbound lane. While they were assisting the couple, a second southbound car spun out and slid sideways, running into the group and then into another vehicle. After coming to a stop, the car left the scene.