SAN DIEGO (FOX 5/KUSI) — A brush fire that started Monday afternoon in Tijuana, Mexico spread across the border into the United States in southern San Diego County.
Cal Fire firefighters were called to a 20-acre brush fire at 10 a.m. Tuesday that was burning in a remote area in rocky terrain in the Otay Mountain Wilderness across the U.S.-Mexico border from Tijuana.
The Border 6 Fire started in Mexico just before 2 p.m. Monday, Cal Fire reports…