A volunteer diver with the Itawamba County Dive Team died while searching for the body of a teenager in the Buttahatchie River.

Monroe County Coroner Alan Gurley says 44-year-old David Sheffield, of Tupelo, was in the water for an hour or two Wednesday when he surfaced, unable to breathe

Gurley said Sheffield was taken to Pioneer Community Hospital in Aberdeen where he was pronounced dead on arrival at 1:13 p.m.

Gurley said it is unknown what caused the diver’s death.

An autopsy will performed Thursday.

Gurley said the divers were in search of 15-year-old Taylor Smith who was last seen swimming with three friends Friday.