Updated Sept. 7, 2017 at 8:32 p.m.
A fire of unknown origin spread over hilly terrain just north of the U.S.-Mexico border in eastern San Diego County Thursday, blackening about 25 acres but causing no reported structural damage or injuries.
The blaze erupted about a mile west of the Tecate Port of Entry in the Potrero area shortly after 3 p.m., according to Cal Fire.
Ground crews and personnel aboard firefighting aircraft fought the flames, halting their spread within two hours, the state agency reported.
The fire was 20 percent contained as of 7:45 p.m., Cal Fire reported.
The blaze was never an imminent threat to any of the back-country homes or other structures in the area, Cal Fire Capt. Issac Sanchez said.
The cause was under investigation.
–City News Service
