CAL FIRE/Riverside County Firefighters responded to Residential Structure Fire located on the 600 block of E. Main Street in San Jacinto. The first arriving engine reported a single family mobile home with working fire. Fire crews were able to quickly knock down the fire, however, one confirmed fatality was discovered during the primary search. There were no further injuries to firefighters or civilians reported. A prevention officer is en route to the location to investigate. More information will be posted as it becomes available.