FORT WORTH (August 10, 2012)--A 4-year-old boy North Texas boy has died three days after witnesses say he saved a 3-year-old girl from drowning in a neighborhood pool.

The boy’s parents, Cris and Misty Vento, said they decided to remove their son, Xander Vento, from life support at Cook Children's Medical Center in Fort Worth and said they would donate their son's organs.

Xander Vento had been hospitalized since he was pulled from the pool Monday afternoon and lapsed into a coma.

Medstar ambulance spokesman Matt Zavadsky said witnesses told paramedics that Xander and a 3-year-old girl were in the pool when the girl started to drown.

They said Xander held the struggling girl's head above water until she was safe, but in the process became exhausted and slipped below the water's surface.