A Beaver County school janitor was sentenced to 10 years in prison yesterday on charges that he installed a camera to peep at girls and women using a toilet at Center Area Middle School.

Phillip D. Winkle, 32, of Aliquippa, pleaded guilty to one count of possessing child pornography on June 19. At the time, he agreed to serve the maximum 10-year prison term.

According to the prosecution, Mr. Winkle drilled a hole in the wall that separated the girls' lower-level bathroom from a storage room. He then set up a peephole camera that looked into one stall.

The camera could be operated manually or set to automatically record. The bathroom was used by both pupils and staff.

Mr. Winkle was accused of making 131 recordings of female faculty and another 40 of girls using the toilet from July 2005 through February 2006. Most of the pupils were about 12 years old, prosecutors said, though "one girl was so young she had to lift herself up onto the toilet seat."

Sound was included on most of the recordings, and Mr. Winkle made slow-motion images, too. There were 600 images downloaded onto two computers at his home.

There was no evidence he distributed any of the videos.

Mr. Winkle was caught by two other janitors who wondered what he was doing in the darkened storage room.

In addition to the time he spends in prison, Mr. Winkle also will spend five years on supervised release.