A riot at a maximum-security jail Saturday afternoon left one inmate dead and more than 100 injured, nine critically, authorities said.

Numerous ambulances were summoned to the remote North County Correctional Facility after fighting began and guard fired tear gas. No law enforcement personnel were injured, said Inspector Ron Haralson of the Los Angeles County Fire Department.

"We have 100-plus injuries with nine critical and eight minor," Haralson said. One inmate was pronounced dead at the scene, he said.

Jail officials were not immediately available for comment.

Paramedics were stationed outside the facility because tear gas was used to subdue the rioting, Haralson said.

Televised reports showed a long line of ambulances outside the facility. Firefighters laid out colored plastic sheets to treat the injured.

The North County Correctional Facility, about 40 miles northwest of downtown Los Angeles, is a maximum-security complex composed of five jails that together house about 4,000 inmates.