Girl found unresponsive in Pleasanton pool dies in hospital

An 8-year-old girl has died after she was found unresponsive in a Pleasanton pool on Sunday.

The Alameda County Sheriff announced Wednesday that the girl died at UCSF Benioff Children's Hospital in Oakland.

The girl was found in the Castlewood Country Club pool by a lifeguard around 2 p.m. Sunday and was taken to the hospital in critical condition. 

The Alameda County coroner's bureau said the girl, identified as Ann Cai, died Wednesday morning.