The toddler accidentally fell into a Sandalwood Drive swimming pool during a July Fourth party and drowned, around 5:10 p.m. East Brunswick police in a statement.
Adults at the party realized the boy was missing, when a family member spotted him at the bottom of the in-ground pool, police said.
The boy was transported to Robert Wood Johnson hospital, where he later died.
The home's security camera recorded video of the boy falling into the pool, and the death has not been viewed as suspicious, police said.
Last month, three East Brunswick family members drowned in their backyard pool.
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