The 46-year-old victim was found when officers responded to a welfare check at a home at 143 Larch Dr.
The woman, later identified as Aleena Asif, was unconscious and not breathing when authorities arrived.
The medical examiner has determined her death to be a criminal homicide due to asphyxiation by an unknown chemical substance.
The investigation is ongoing.
Anyone with information is asked to contact the Nassau County Crime Stoppers at 1- 800- 244-TIPS or dial 911. All callers will remain anonymous.
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