Published: Feb 15, 2011 11:56 PM EST
Updated: Feb 15, 2011 8:16 PM EST

COLLIER COUNTY- The Collier County Sheriff's Office is investigating the death of a 15-month-old toddler, Ava Grace Slabyin, of Golden Gate Estates.

At 8:43 a.m. Tuesday, a 911 call came in from 4290 26th Ave. S.E. reporting a drowning, according to Sheriff's Office spokeswoman Karie Partington.

When emergency rescuers arrived on the scene, the baby was on the floor in the master bedroom and her mother, Randi Marie Macleod, was performing CPR, according to Partington.

The toddler was transported to the hospital where she was pronounced dead.