Police kept a close eye on sex offenders this Halloween to keep Long Island's trick-or-treaters safe.

All sex-offender parolees were required go straight home after work on Friday and stay there until 6 a.m. Saturday.

"They're given conditions in writing directing them to remain at home, they don't decorate for Halloween, they don't wear costumes, they don't have candy for trick-or-treaters, they don't open the door for trick-or-treaters," says Bureau Chief Irwin Davies, of the New York State Department of Corrections.

The rules apply to approximately 2,300 sex offenders under parole supervision across the state.

News 12 Long Island followed along as a group of parole officers knocked on doors of registered sex offenders in Glen Cove and Hicksville. In addition to enforcing Halloween rules, the officers also tested for drug abuse and other possible parole violations.