LITITZ – A Lancaster county sex offender arrested by the Lancaster County Human Trafficking Task Force pleaded guilty to six counts Friday in Lancaster County Court. 55 yr old, Sean Deemer of Lititz, was sentenced to 4 to 8 years in prison followed by 5 years of probation after admitting guilt to charges on two dockets as a result of an undercover investigation that the FBI referred to the task force. Deemer pleaded guilty to three counts of unlawful contact with a minor on each docket. The FBI, posing as a minor, referred an undercover text exchange between Deemer to Lititz Borough Police. The investigation was then referred to the Human Trafficking Task Force and an undercover detective started a second text conversation with Deemer posing as a different minor. Multiple explicit and lewd messages and photos were sent and requested by Deemer.