WORCESTER – A Fitchburg man who investigators said distributed a video of himself sexually assaulting a young boy, pleaded guilty Monday in federal court to charges of enticement of a minor and child pornography.Ryan Decarolis, 27, who has been in custody since his arrest on Aug. 2, 2019, pleaded guilty to five counts of sexual exploitation of a minor, two counts of distribution of child pornography and one count of possession of child pornography before U.S. District […]