A Cincinnati doctor plans to plead guilty in one of the largest documented schemes to smuggle prescription drugs into Eastern Kentucky from other states.

Lloyd Stanley Naramore is scheduled to plead guilty Monday in U.S. District Court in London, according to a court document.

Naramore was charged with improperly prescribing drugs to people from Eastern Kentucky who then took the pills back home and sold or abused them. He is among more than 20 people charged in the case.

Others include a doctor from Philadelphia and a pharmacist from Cincinnati.

Police have said more than 150 people associated with the drug ring traveled from Eastern Kentucky to other states to get drugs.

The head of the drug ring, Timothy Wayne Hall of Floyd County, was sentenced to 15 years in prison.