KNOX COUNTY, Tenn. (WGHP) -- Eleven-month-old Aiden Xavier Leonardo died after being hospitalized last week, WATE reports.
According to police reports, the child's mother, Lindsee Leonardo, 32, left the baby in a bathtub to "smoke a cigarette and have some 'me time'" while she listened to two songs on her phone Wednesday night, WVLT reports.
Records show Leonardo told police she left the 11-month-old and a 23-month-old unsupervised in the bathtub while she went outside.
Leonardo found the 11-month-old unresponsive when she got back 10 minutes later; the tub was full and Aiden was floating on his back.
First responders got him to a hospital in Tennessee, but he died a day later.
Lindsee Leonardo was charged with first-degree murder on Thursday.