California Department of Forestry and Fire Protection spokesman Scott Maclean said there were no details immediately available about the circumstances of the deaths at Paradise, a mountain community some 90 miles (145 km) north of Sacramento left devastated by the Camp Fire. He said the bodies were badly burned, which would make identification difficult.
Authorities are bringing in a mobile DNA lab to help with identification and are encouraging relatives to donate.
The Camp Fire burned down more than 6,700 homes and businesses in Paradise, more structures than any other California wildfire on record. It grew to 105,000 acres on Saturday with 20% containment.