A Mantua Township dentist was arrested Wednesday after a woman who works there found a hidden camera in the employee bathroom, police said.

Robert Hofstetter, 69, of Mantua Township, was charged with invasion of privacy after the woman, and some fellow employees, went to the Washington Township Police Department at 4:30 p.m. and told them about her discovery, according to a release from the department.

Police did not release any other details about the incident.

Hofstetter's practice is called Hofstetter Family Dentistry and is located at 400 Ganttown Road. He is the only dentist who works there and is the only employee listed on the office web site.

He was released pending a court appearance.

Chris Sheldon may be reached at csheldon@njadvancemedia.com. Follow him on Twitter @chrisrsheldon Find NJ.com on Facebook.