A wildfire burned across swaths of rugged open terrain east of Otay Mesa and just north of the U.S.-Mexico border Tuesday, pushing into Baja California as ground and air crews worked to corral the flames.
The non-injury blaze — the second to break out in the same general vicinity in as many days — began for unknown reasons near Tecate Creek in Marron Valley at about 10 a.m., according to Cal Fire.
By mid-afternoon, the fire had blackened some 40 acres, was 5% contained and had moved south across the international line, said Thomas Shoots, a fire captain with the state agency.
Ground crews and personnel aboard air tankers and water-dropping helicopters were battling the blaze, which posed no immediate structural threats. As of shortly after noon, the nearest homes to the burn area were several miles away, Shoots said.
In addition to fighting the flames on the U.S. side of the border, Cal Fire personnel were aiding Mexican authorities just to the south in adjacent Baja territory.
There have been several recent wildfires in the terrain near the U.S.-Mexico border. On Monday evening, a fire started east of San Ysidro and grew to about 30 acres before firefighters stopped its spread overnight. The fire, which was 25% contained by Tuesday morning, started in steep, rugged terrain that was challenging for firefighters, Cal Fire San Diego said.