Teens are thought to have started a brush fire in Diamond Valley on Monday afternoon.
The fire started at about 5:30 p.m. on April 14, in a wooded area near Robert Street, Diamond Valley Fire Rescue said.
Callers saw teenagers running from the area. Last year, a larger fire in the same location was also believed to have been started by youth, the fire department said.
The fire department asks parents to talk to their kids about the dangers of playing with fire.
Despite recent snow, conditions are dry, and fires can spread quickly, the department said.