Authorities are conducting a manhunt for Juan Carlos Diaz Perez, a suspect charged with first-degree murder following the discovery of a woman's body in the bed of his white pickup truck, located in Oak Ridge. The Knoxville Police Department received reports of a violent assault involving Diaz Perez and his girlfriend at a residence on Mercer Street, where evidence of a deadly encounter was found, although neither the victim nor the suspect was present when police arrived. The victim's identity remains undisclosed, and her body is set for examination at a regional forensic center. A collaborative search effort is underway involving multiple law enforcement agencies, with a warning for the public to report any sightings of Diaz Perez without approaching him. The investigation is ongoing as authorities seek more details surrounding the incident. Updates on the situation will be provided as they become available.