It is also believed the body had not been moved, and his murder occurred in the shed.
The body of Jimmy Wayne Mullins, 65, 450 Allen Drive, Apt. 1, was found Monday during a welfare check by Kingsport police. His body was inside a lean-to type shed connected to apartments he managed in the Lynn Garden community.
A tenant of the apartments, James Leo Greenwell II, 38, Apt. 4, has been arrested and charged with first-degree murder.
Police have declined to say how Greenwell was developed as a suspect, but seized a .45-caiber handgun allegedly used in the slaying.
Greenwell allegedly admitted to killing Mullins during a Monday interview at the Kingsport Police Department. Police say he has yet to provide a motive.
According to Det. Frank Light, Greenwell had been living at the four-apartment complex for about six months. Over the past three months he had been doing odd jobs at the property for Mullins, including painting and replacing deck boards.
Det. Randy Murray was sent to the apartments on Monday by Police Chief Gale Obsorne. According to Lt. Ralph Cline, Osborne was told Mullins, "hadn't been seen for awhile, and people were concerned about him."
As Det. Murray was knocking on apartment doors he noticed a foul odor. The odor led him to a lean-to type storage shed attached to the apartments, and the discovery of Mullins' body.
A police investigation is continuing.