A missing man found dead in a building Friday near the Edisto River in Dorchester County was shot to death, authorities said.

Drew Mitsuo Shumway, 24, of St. Johns Bethel Street in Moncks Corner died of a single gunshot wound to the back of the head, according to County Coroner Chris Nisbet.

The death has been ruled a homicide.

Sheriff's deputies were called to the scene, off S.C. Highway 61 about a mile from the river, at about 1:40 p.m. Friday. An autopsy was performed Monday.

Nisbet did not say how long Shumway had been missing or how long he might have been dead.

Reach Brenda Rindge at 937-5713 or @brindge on Twitter.