Late Wednesday night, May 01, 2019, the City of Riverside Fire Department along with AMR and the Riverside Police Department responded to reports of a semi truck vs a pick-up truck traffic collision. The fatal collision was reported around 11:49pm on Mission Inn Avenue at Indian Hill Road. The first arriving engine company found a pick-up truck overturned and engulfed with fire. Initial reports indicated the driver of the pick-up truck may have been ejected. Firefighters were able to quickly extinguish the fire while performing CPR on the driver. No other occupants were located inside the pick-up. The driver of the pick-up was pronounced deceased at the scene. The driver of the semi truck was not injured and remained at the scene and cooperated with the investigation. The cause of the fatal crash remains under investigation.