San Diego authorities have arrested a 17-year-old suspected of starting the Pointe Fire in Spring Valley, which burned 25 acres of brush-covered land, evacuated a large of number of area residents and injured one firefighter.

The teenager, arrested Sunday, is being charged with “willfully and maliciously setting fire to forest land.” Several agencies, including San Diego County Fire Authority, San Diego County Sheriff’s Bomb and Arson Unit, and San Diego City Metro Arson Strike Team (MAST) cooperated on the investigation and arrest.

The Spring Valley Pointe Fire started in the afternoon on August 17, north of Pointe Parkway and west of Jamacha Road. Firefighting aircraft and more than 100 firefighters initially battled the flames. The fire was fully contained by the evening of August 18. Though no homes were damaged, the fire threatened public safety, officials said.

Authorities aren’t releasing additional information about the teenager, because the individual is a juvenile.