A Laurel man was sentenced to 20 years in prison for secretly videotaping a 13-year-old girl in a bathroom.

Frank Alan Klukosky, 43, pleaded guilty in March to producing child pornography. After he finishes his prison sentence, he will have to register as a sex offender for the rest of his life.

According to charging documents, Klukosky admitted to hiding a key fob camera inside a bathroom to videotape the girl using the toilet or preparing to take a shower.

He then distributed those images and videos to other pedophiles.

In charging documents, the secret recordings were uncovered in June 2012, after a federal probation officer found the illicit images on the cellphone camera of a registered sex offender.

"[Otherwise], this child pornography might never have been discovered," prosecutors said in charging documents.

The investigation revealed that Klukosky had driven to the sex offender's home in Laurel and uploaded the videos and images onto the sex offender's computer and cellular telephone.

Klukosky used a memory card that contained at least 120 images and six videos of child pornography.

The videos were taken with hidden key fob cameras, and at least one of the videos showed Klukosky while he was setting up or taking down the camera. In one instance, he hid two cameras to record from different angles.

In email discussions with at least three other pedophiles, he described what images he had and how he obtained them.

"I'm a videographer on the side," Klukosky wrote in one email. "I have various cameras including a few that look like car remote entry fobs. They work quite well."

In October, the FBI searched Klukosky's home, seizing video cameras, key fob cameras, computers and an external hard drive that contained about 2,000 images and 16 videos of child pornography.

Klukosky told investigators that he liked to look at child pornography involving teens and that he shared images with other adult males he met through Craigslist, according to charging documents.