The fire was reported at 12340 High Valley Road and Alta Vista Drive at about 4:40 p.m., according to Cal Fire.
Cal Fire Capt. Joe Petersen said the fire burned a total of six acres.
One air attack, two air tankers, a helicopter, a bulldozer, two hand crews from Konocti Conservation Camp and five engines responded from Cal Fire, Petersen said. Local fire districts offered mutual aid response, he said.
Cal Fire reported power lines were down at the site.
JD Guidi, a spokesman with Pacific Gas & Electric, said an oak tree branch had knocked down the lines.
Guidi said a total of six PG&E customers were affected by the downed power lines. Power to all of those customers was expected to be restored by midnight.
The downed power lines are a possible fire cause, but Petersen said the investigation is still under way.
The fire was reportedly contained at approximately 5:17 p.m., said Petersen.
Three engines remained on scene throughout the evening, conducting mopup operations, he added.
Earlier in the day, shortly before 2 p.m., a small grass fire was reported along Highway 29 south of Witter Springs.
Petersen said that fire burned less than half an acre before it was contained a short time later.
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