Mercer County authorities are handling another significant sex abuse investigation. 33 year old Antonio Cortez Williamson is facing three Class X felonies of Predatory Criminal Sexual Assault of a Child. The case involves one child under the age of 13, according to Mercer County State’s Attorney Meeghan Lee. The matter was investigated by the New Boston Police Department with assistance from the Mercer County Sheriff’s Department. Lee says Williamson is from Scott County. Bond has been set at $250,000 with a preliminary hearing set for September 16th. Williamson is in custody at the Mercer County Jail. Class X felonies are punishable by 6-to-30 years in prison upon conviction.