A Montgomery County middle school service worker was arrested on peeping tom charges amid allegations he used a staff window to watch girls changing clothes in a locker room, police said Friday.

Josh Andrew Greenberg, 28, of Snyder Mill Court in Gaithersburg, has been placed on administrative leave from the county school system and was released from jail pending further court action, according to county officials. On Thursday, police were called to Herbert Hoover Middle School in the Rockville area, where two female students had just told school personnel of previous peeping tom incidents — one the day before, the other about one month prior, police said.

The window that Greenberg allegedly looked through has blinds on it, police said. Court records do not indicate if Greenberg has hired an attorney yet. He could not be reached by phone.