Cal Fire crews responded to three separate vegetation fires Saturday night at Camp San Luis Obispo that investigators believe were caused by munitions firing.
The first fire broke out about 11:15 p.m., a Cal Fire spokeswoman said Sunday.
Two other fires broke out over the next three hours, burning vegetation and brush over about 7 acres. No injuries or monetary damage was reported, and the fires were easily extinguished, the agency said.
Crews remained on site until about 3:30 a.m. Sunday.