TOOELE — A rollover accident in a remote section of Tooele County ejected a man and woman from the pickup truck they were in and injured the two other occupants in the vehicle.

The late Saturday or early Sunday crash went undetected for five or six hours, according to Tooele County sheriff's deputy Keith Borders, until a passerby saw the crash and alerted police at 6:30 a.m. Sunday.

Borders said the foursome were in a pickup truck on the dirt Pony Express Road in Rush Valley when the truck veered right, overcorrected and ultimately flipped.

A man and woman were ejected out the back window, while the other couple were trapped inside the cab. The pair who were ejected managed to pull themselves into the bed of the pickup truck.

A man and woman were flown to Intermountain Medical Center, another woman was flown to the University Hospital and a man was taken by ambulance to an area hospital.

Borders said the accident victims had cellphones they could have used to call for help, but did not. The cause of the crash remains under investigation, but Borders said investigators suspect alcohol may have been a factor given the amount of beer cans strewn about the crash site.