A wildfire burned 70 acres of land alongside Tecate Creek in Marron Valley, east of Otay Mesa, which is the second in a two-day period.
CalFire crews worked Wednesday to douse hotspots at the site of the non-injury wildfire that pushed into Mexico. Authorities said both breakouts began spreading for unknown reasons near Tecate Creek in Marron Valley at about 10 a.m Tuesday.
According to Thomas Shoots, a fire captain with the state fire agency, ground crews and personnel aboard air tankers and water-dropping helicopters battled the blaze, which posed no imminent structural threats.
The state fire agency aided Mexican authorities south in the adjacent Baja territory. Firefighters reported stopping the blaze's spread by 5:30 Tuesday, estimated at 70 acres in size.
Medics took one Cal Fire San Diego firefighter to a hospital for treatment of a minor heat-related illness, Shoots said.
The fire was reported about 14 hours after another blaze erupted a few miles to the west, on the outskirts of Otay Mesa. According to shoots, crews were able to halt the spread of that fire, which caused no known injuries or property damage by 3 p.m. Tuesday, which had scorched roughly 30 acres.
CalFire posted an update shortly after 8 a.m. Wednesday the 70-acre fire remains 65 percent contained, and dozens of firefighters from Cal Fire San Diego and Cleaveland National Forest will continue mop-up and line-up construction.
The fire east of Otay Mesa is 100 percent contained at 30 acres.