At 10:32PM, Beaumont Fire Suppression units responded to a report of a house on fire at 11155 Pine Haven, Upon arrival units discovered heavy fire in the rear of the single family two story dwelling. Units were unable to make an interior fire attack because of heavy fire conditions. It took over an hour to bring the fire under control. Neighbors report one person was living in the dwelling, however firefighters conducted multiple searches throughout the dwelling and were unable to locate the occupant. The cause of the fire is under investigation.