NORTH LAUDERDALE (CBSMiami) — It’s every pool-owners darkest nightmare: a child falls into it and drowns.

That nightmare was reality for the grandparents of a three-year-old boy visiting their home Saturday afternoon. On Sunday, the Broward Sheriff’s Office identified the boy as Metzden Cenord.

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According to BSO’s Dani Moschella, around 2 p.m. the boy and his mother, who is six months pregnant, were taking a nap on a bed at the grandparents’ home.

The boy awoke and asked her whether he could go see his uncle, who was lying on a bed in another room. She said it was okay.

Instead of going to that room the boy went outside through a partially opened sliding door into the pool area.

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He then approached the pool and fell in.

A short time later, the uncle went outside and saw the boy’s sandals floating in the pool. Because the water was dark and murky, he said he couldn’t see the boy.

He immediately entered the pool and pulled the boy out, then administered CPR. The boy was rushed to the hospital but was already dead.

The boy’s mother, who is six months pregnant, was too distraught to talk to CBS4.

The Broward Sheriff’s Office is treating the boy’s death as an accident.

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Drowning is the number one cause of death for children between the ages of one and four in Broward County.