Knoxville Fire and Rescue and the Knoxville Police department responded to a call about an unresponsive 15-year-old male in Knoxville at 10:02 p.m. yesterday. Knoxville Police Chief Dan Losada tells KNIA/KRLS News officials responded to the address and found the young man was deceased.  The investigation is continuing.  The cause and manner of death have not yet been determined.  Losada says there is no known reason for the community to be concerned for their own safety.