Randy Wade Standlee is being held in the Ada County Jail on a felony charge of sexual enticement of a minor over the internet after Ada County Sheriff’s detectives say he made arrangements to meet what he thought was a 13-year-old girl for sex Wednesday.

The teen girl was really a detective for the Ada County Sheriff’s Office, who had been in contact with the 31-year-old Standlee over the internet for several weeks, according to reports.

Standlee’s arrest is one of dozens Ada County Sheriff’s detectives have made over the last decade as part of a long-running internet enticement sting operation, where adult men chat with what they think are teenagers on social media sites.

Detectives arrested Standlee just after 6 p.m. Wednesday in the parking lot of a Boise Bench area convenience store, where he made arrangements to meet the girl but found officers waiting for him instead. He was then arrested and booked into the jail.

Standlee will make his initial court appearance Thursday afternoon.

The crime of sexual enticement of a minor over the internet is punishable by up to 15 years in prison. Anyone convicted of that charge has to register as a sex offender.

The Ada County Sheriff's Office has been conducting similar Internet sting operations since 1999, as part of the Internet Crimes Against Children Task Force. Officials estimate they have made at least 50 arrests during that time.

Most of those arrested have eventually entered guilty pleas or been convicted at trial, according to court records. In almost all of those cases the men involved were arrested after they showed up at pre-arranged meeting places.