A Planet Fitness employee was charged with unlawful surveillance after allegedly using a cell phone to record a woman during a tanning session at the gym’s Great Neck Plaza location Saturday, according to the Nassau County Police Department.

A 20-year-old woman entered the Planet Fitness tanning room Saturday evening and noticed a cell phone recording in the ceiling panels following the tanning session, officials said. The woman, whose name was not disclosed in the report, immediately called 911 and an investigation was launched.

Demetrius Sumter, 27, was arrested and charged with unlawful surveillance in the second degree and was scheduled to be arraigned at the First District Court in Hempstead Sunday, but efforts to reach officials for further comment were unavailing.

A Planet Fitness spokesperson said, “We are aware of the incident that took place at the Planet Fitness in Great Neck Plaza, Nassau, and the employee involved was terminated immediately.”