Thomas Allen
Thomas Allen

Murphysboro, Ill. – Police say a sex offender broke the law when he appeared at a Halloween event this weekend.

Murphysboro Police say they were called to Riverside Park around 11:20 p.m. Saturday because several people reported 41-year-old Thomas Allen of Murphysboro at the Big Muddy Monster Haunted Hayride. The Illinois Sex Offender Registry Act prohibits any registered sex offender from participating in Halloween activities with children present.

Allen was previously convicted of predatory criminal sexual assault with a four-year-old victim when he was 23-years-old.