ISLAND LAKE – An Island Lake man arrested Thursday exchanged explicit photographs with a juvenile and used intimidation to continue their correspondence over social media, according to the McHenry County Sheriff's Office.

Douglas J. Carlson, 43, is charged with harmful material and intimidation, both felonies, after a three month investigation.

Carlson contacted the juvenile numerous times and eventually sent explicit photographs, obtaining explicit photos from the juvenile in return, according to a news release. Carlson leveraged the photos he received from the juvenile to get more, threatening to show the pictures to the juvenile's friend if he didn't get what he wanted, the release said.