A man lit a fire near the Chatsworth Reservoir, authorities say, but firefighters were able to contain the blaze and residents chased down the suspect.

The suspect was seen walking away from an area after allegedly lighting a brush fire in the vicinity of Knapp Ranch Road and Woolsey Canyon Road.

With deputies rushing to the scene, a group of neighbors in Chatsworth chased down a man they said started a couple of brush fires near their homes.

A man was arrested for an alleged arson after a group of witnesses spotted him lighting a fire in Chatsworth on Monday and detained him until deputies arrived, according to the Los Angeles County Sheriff’s Department.

Neighbors in Chatsworth chased down a man accused of trying to start a brush fire. The detained the man, before deputies got there to arrest him.