A woman involved in a rollover may have drowned as she hung upside down while in her seat belt and partially submerged in an irrigation canal, Utah Highway Patrol Sgt. Blaine Robbins said.

Bonnie K. Ekins, 32, of West Valley City, was driving southbound on Interstate 215 Friday night or Saturday morning when she attempted to take the ramp to state Route 201, Robbins said. It appears she left the road, overcorrected and then rolled at least twice, going about 70 feet down an embankment and into a canal, according to UHP investigators.

No other vehicles were involved, no passers-by witnessed the accident and no one was notified of the accident until UHP troopers received a call about 9 a.m. Saturday. Robbins said the canal is not very deep and that only Ekins' head, up to her chin, was underwater. There were no immediate signs of head trauma, he added.

"It's very possible she drowned," Robbins said. It's unknown how long Ekins had been in the canal, but there was frost on the undercarriage of her car when help finally arrived, Robbins noted.