(KRON) -- A wildfire burned multiple acres in Sonoma County on Sunday afternoon, according to Cal Fire. Firefighters were dispatched to the 6300 block of Briggs Ranch Road in Geyserville at around 1:47 p.m. Forward progress was halted by 6:22 p.m., fire officials said. Crews remained on scene into the night to put out hot spots. Latest update on search for missing Oakland coffee shop owner Amy Hillyard: ‘Combing through hours of tapes’ The fire, dubbed the "Briggs Fire," had burned approximately 4 acres by 5 p.m. and was burning in heavy fuels, Cal Fire said. According to fire officials, the fire had a slow rate of spread. There were no reported injuries. No structures were threatened by the wildfire. Image: Cal Fire LNU on XImage: Cal Fire LNU on X Image: Cal Fire LNU on X The fire was located about 10 miles northwest of Calistoga. The cause is under investigation. ...read more read less