Authorities believe 11-month-old James Farrior climbed face-first into a bucket of water inside the Queens facility.
When police arrived, Farrior was in cardiac arrest. He was rushed to Jamaica Hospital, where he was pronounced dead.
It happened at a daycare inside a home at 101-27 108th Street in Richmond Hill, Queens.
It was unclear whether the daycare was operating legally, but health officials were investigating. Preliminary information indicated the location may have been considered an informal care arrangement requiring no permit or license, the health department said.
Officials said Khan watched her own 3-year-old son and 4-year-old daughter while taking in others.
Police said charges may be upgraded depending on the cause of death.
An autopsy will be performed Tuesday.
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