On Halloween, Loudoun County Sheriff’s deputies will join members of the Virginia Department of Corrections to visit the residences of sex offenders in Loudoun County as part of “Operation Porch Lights Out,” according to the Loudoun County Sheriff’s Office.

The goal of the visits is to monitor the homes of convicted sex offenders who abused children to ensure that they are abiding by the restrictions imposed by probation or parole, authorities said. Convicted sex offenders who are on probation or parole are required to have their porch lights off, and may not display inviting decorations or answer the door for children on Halloween, according to the Sheriff’s Office.

Members of the Virginia Department of Corrections will work with local law enforcement throughout Virginia on Oct. 31 to perform random home visits of convicted sex offenders to ensure that they are in compliance on Halloween, authorities said.

Va. corrections officials said there are about 3,700 convicted sex offenders on parole or probation statewide, according to the sheriff’s office.

This post has been updated.