The Item of Sumter reported Saturday that Khianna Benjamin died about 11:30 p.m. Thursday.
Authorities say Khianna's father woke up Thursday night and saw his daughter headfirst in a mop bucket in the kitchen. Robert Benjamin and his girlfriend, who was not the girl's mother, took Khianna to a neighbor's house and called 911.
Khianna was pronounced dead at a hospital, and an autopsy showed that she drowned. Police Maj. Alvin Holston says an investigation is ongoing.