CAMPO, Calif. (AP) - Eleven people were injured when a vehicle possibly involved in smuggling rolled over near the U.S.-Mexico border in San Diego County's rugged eastern area.

California Department of Forestry and Fire Protection Capt. Nick Schuler says the Ford Bronco rolled over less than a mile from the border around 1:30 p.m. Saturday.

Schuler says it's not clear what caused the single vehicle accident.

Two victims suffered moderate injuries and were flown to hospitals by helicopter. Nine others were treated for minor injuries.

Border Patrol spokesman Jason Rogers says agents suspect the victims are undocumented immigrants who had just been smuggled across the border. Agents took the driver into custody.