Fire crews extinguished a seven-acre vegetation fire in Pacific Highlands Ranch Sunday afternoon in about an hour.
The fire began at 3 p.m. Sunday off Carmel Valley Road and Zinnia Hills Place, officials said.
It took about 60 San Diego Fire-Rescue Department firefighters and two helicopters to put out the flames.
The blaze briefly threatened nearby homes. Firefighters worked though to keep flames away, and no homes were damaged, fire officials said.
Crews remained at the scene at 5 p.m. to mop-up and watch for any hot spots.
The cause of the fire was under investigation. OnScene TV reported that officials regard it as suspicious.
