The investigation was conducted at 7 Foot Spa, located at 145 Smithtown Blvd. in Nesconset at 3:10 p.m. Thursday, May 12.
The Smithtown Fire Marshal issued 35 violations for fire code and building offenses.
Tiffany Xu, age 54, of Syosset, was charged with prostitution and unauthorized practice of a profession.
Xu was given a desk appearance ticket and will be arraigned at First District Court in Central Islip at a later date.
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