The Clarksville Police Department is planning a press conference at 7 a.m. to discuss several arrests made in what the department is calling a “multi-million-dollar drug trafficking organization.”

A news release notes the investigation took place with the assistance of the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and Indiana State Police.

Police have said the drug trafficking organization is responsible for bringing over 2,600 pounds of marijuana to southern Indiana over the past 18 months.