Fire crews responded late Tuesday afternoon to a brush fire in Otay Mesa, authorities said.
The vegetation fire was the second of its kind Tuesday in San Diego. Around 1 p.m., firefighters responded to and knocked down a small blaze in the San Diego River valley in the Grantville neighborhood near Mission Valley.
The fire in Otay Mesa was reported about 3:30 p.m. on Airway Road near Caliente Avenue, just south of state Route 905, according to the San Diego Fire-Rescue Department.
Flames had burned about 1.5 acres as of 4:15 p.m., but no structures were threatened and no roads were closed in the area, according to the Fire-Rescue Department.
Three helicopters, four engines and two brush fire-specific trucks were among the equipment initially sent to fight the blaze, according to the Fire-Rescue Department. A brush fire strike team, consisting of six brush rigs, was sent to the scene a little after 4 p.m.
Nearly 70 firefighters and other emergency personnel responded to the blaze, according to the agency.