TUCSON - The Tucson Police Department responded to reports of a shooting in the parking lot of Fry's located at Houghton and Rita Road in Rita Ranch Tuesday evening.

Upon arrival, TPD located a man with obvious signs of gunshot trauma. He was pronounced dead on-scene.

Three people were detained in the area and one other was detained a short while later, according to Sgt. Pete Dugan of TPD. There are no other suspects outstanding.

Dugan also reported that this incident is not random and that the involved individuals knew each other.

Furthermore, this incident is not connected to the Fry's grocery store, Dugan told News 4 Tucson.

This incident is still under investigation.

Anyone with information is asked to call 88-CRIME. You can remain anonymous.

Stay with News 4 Tucson for the latest information on this story.