PALMDALE (CBSLA.com) — Homicide detectives Tuesday investigated the circumstances surrounding the drowning death of a 3-year-old boy in Palmdale.

According to the Los Angeles County Sheriff’s Department, the boy and his mother were attending a Fourth of July party at a home located in the 37700 block of 50th Street East.

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“After the festivities moved to the front of the residence to watch fireworks, the mother of the child noticed her child was missing and began to search for him,” explained Deputy Crystal Hernandez. “She located the boy in the backyard pool. The mother immediately pulled the child from the pool and began to render aid until emergency personnel arrived.”

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Paramedics transported the child to a hospital where he later died. His identity is being withheld pending family notification.

At this time, it remains unclear how long the child was in the water before he was discovered.

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The investigation is ongoing.