An interstate drug trafficking ring based in Ohio Township was closed down last week when a state grand jury returned indictments against 12 men.

The investigation by the state Attorney General’s Bureau of Narcotics Investigation was called “Operation Infamous Choppers” after the Camp Horne Road, Ohio Township business that served as the base for a drug ring that officials say brought some $2 million worth of marijuana from Mexico, by way of Arizona, to Western Pennsylvania.