Justin Dale Bradley, 23, of Cleveland, Tenn., has been charged in the death of his girlfriend's son, Dakota James Arndt.
Deputies and emergency workers were called Wednesday night to the residence on Jenkins Circle in Soddy-Daisy on a report that the child drowned. The 3-year-old was taken to Children's Hospital, where he was pronounced dead Friday night.
Sheriff's office spokeswoman Janice Atkinson said Bradley is charged with criminal homicide.
Earlier Saturday, Atkinson had said the sheriff's office was investigating the death as a drowning.
Bradley's court date is set for Sept. 5.
See complete story in Sunday's Times Free Press.