McCORMICK COUNTY, S.C. () – The South Carolina Law Enforcement Division (SLED) announced a former McCormick County police officer has been charged with misconduct in office following an investigation of an incident that occurred on a college campus in 2024.

According to SLED, Matthew Dillon Yonn, 28, was booked into the McCormick County Detention Center and charged with Misconduct in Office on Feb. 7, 2025.

A warrant affidavit alleges, Yonn, “while acting in his capacity as a law enforcement officer for the Town of McCormick Police Department, did engage in sexual acts with a woman in the vicinity of his Town of McCormick Police Department patrol vehicle at the Piedmont Technical College-McCormick Campus, and these sexual acts occurred while the Defendant was on duty and in uniform, in violation of the Common Law of South Carolina” between April 1, 2024 and May 9, 2024.

The McCormick County Sheriff’s Office requested the assistance of SLED in the investigation.

This case will be prosecuted by the South Carolina Attorney General’s Office.