UPDATE: Officials confirm 11-month-old has died after being found unresponsive in Knox County bathtub

KNOXVILLE, Tenn. (WATE) – An arrest warrant is shedding light on new details on the Knoxville mother of the 11-month-old child who was found unresponsive in a bathtub Wednesday night.

KCSO saying Lindsee Louise Leonardo, 32, was taken into custody Thursday afternoon and charged with felony aggravated child abuse by Family Crimes and Major Crimes Detectives at Children’s Hospital.

Aiden Xavier Leonardo

According to an arrest warrant, Leonardo told police she put the 11-month-old Aiden Xavier Leonardo and her 23-month-old in the bathtub with 4-6 inches of water before going outside to smoke a cigarette and have some, ‘me time’ around 8 p.m. Wednesday. She said she was outside for about 10 minutes.

Leonardo said when she returned, the 23-month-old had turned the water back on, filling the tub to the top. She said the 11-month old was floating on the her back while the 23-month-old stood in the tub.

She stated she took the victim from the tub to her bed and called 911, with dispatchers instructing her on how to perform CPR.

American Medical Response and transported the victim to Tennova Turkey Creek Medical Center where they regained a heartbeat. The 11-month was later transferred to the East Tennessee Children’s Hospital.

RELATED: Child found unresponsive in bathtub transported to hospital

Leonardo has been charged with aggravated child abuse and first degree murder, the Knox County Sheriff’s Office said Friday afternoon.

The incident is still under investigation.