Update, 5 p.m.
Crews contained the fires along Highway 1 near Cayucos about 3:50 p.m. and expect about a two-hour mop-up process, according to Cal Fire Communications Operator Stacey Salazar.
The cause of the fires was vehicle-related, Salazar said. She added information is still being gathered.
Salazar said there were five to seven fires spread from Studio Drive in south Cayucos to Cayucos Drive in the north. The fires mainly burned along the west side of Highway 1, while some of them were in the center median.
One of the southbound lanes is closed, and it is expected to reopen in about two to three hours, Salazar said.
Cal Fire, Cayucos Fire Department and Cambria Fire Department assisted with fighting the fires.
About six or seven fires are burning along the sides of Highway 1 on Sunday afternoon, according to Cal Fire Capt. Nick Stitzel.
Reports of fires began about 2:47 p.m. The fires are mainly on the west side of Highway 1 and are burning in an area north of Morro Bay up to the north side of Cayucos, Stitzel said.
Cal Fire and Cayucos Fire Department crews are on scene. The response includes seven engines, two hand crews, three chiefs and an air attack.
Stitzel wasn’t aware of any structures in danger; however, he said traffic is backing up because of the fires.
The cause of the fires is under investigation.
This story will be updated as more information becomes available.