A Cortland County man is facing drug charges following a two-month-long investigation.

Cortland County Sheriff mug shot- Sheldon O'Neill

Sheriff’s officials say 45-year-old Sheldon O’Neill of Marathon is charged with criminal sale of a controlled substance.

The Cortland County Sheriff’s Office, Cortland Drug Task Force, New York State Police, Cortland Police and Homer Police Department participated in the investigation.

O’Neill was arrested Friday under a sealed indictment handed up by the Cortland County Supreme Court for one count of criminal sale of a controlled substance.