State Police say Daniel "Max" Winsten is accused of surreptitiously filming patrons in various states of undress.
After four months of investigation in collaboration with Croton Police, the county District Attorney's office and the state Computer Crimes Unit, state police arrested Winsten Friday.
Police said they seized and analyzed a number of computer items from Winsten's home in Croton and then charged him with Unlawful Surveillance in the Second Degree, a Class "E" Felony, and Possessing an Obscene Performance by a Child, also a Class "E" Felony.
On those computers, authorities say, were images of child pornography, unrelated to the health club. But it was the videos taken at the gym that led to the investigation in the first place, discovered after the teen allegedly sold his cell phone without deleting the recorded material.
Police say management at Premier Athletic Club in Montrose is cooperating with the still ongoing investigation. Police are still trying to identify all the individuals in the videos, and say that some victims may be underage.
Winsten was arraigned and released with certain conditions from the Town of Cortlandt Court.
The investigation is ongoing and police say further charges are possible.
If convicted on the current charges, Winsten could face up to four years in state prison.