Monday morning, Amarillo police officers were dispatched to 900 N. Johnson on subject lying on the ground outside the residence.
When officers arrived, they found Tomas Mateo, 32, deceased outside the home.
Initially, officers thought Mateo had been shot. After further investigation at the scene, the cause of death is unknown.
The APD homicide unit and CSI were called to the scene for investigation. An autopsy has been ordered.