Pinal County Sheriff’s Deputies are investigating a bizarre accident at an ostrich ranch.

Visitors at the Rooster Cogburn Ostrich Ranch were in a rollover accident Friday. It happened during a monster truck tour at the ranch near Eloy.

Spokeswoman Navideh Forghani said investigators are looking into the possible cause.

“They’re going to be interviewing everyone that was involved," Forghani said."They’re going to be talking to the driver, the other passengers and they’re going to be taking measurements of when it tipped over and how it tipped over.”

Three people were flown to the hospital and 12 people were injured.