Officials were investigating after multiple fires sparked along the 14 Freeway throughout the Palmdale and Lancaster area on Saturday.
The Los Angeles County Fire Department first received a call regarding the fires shortly after midnight, fire officials said. The flames expanded between Avenue K and Avenue S with most of them being under an acre large.
Up to seven fires burned in the area, said county fire supervisor Ed Pickett. The largest of the blazes burned up a hill at 2 acres. The flames have since been contained.
The cause of the fire was under investigation. Witnesses reported seeing something flying out of the back of a truck that was driving down the freeway that sparked the fires, according to the Los Angeles County Sheriff's Department Palmdale Station.
Around 60 to 77 firefighters responded to the fires, Pickett said.
No structures were threatened and no injuries have been reported.