23 people are facing charges in Roane County after a multi-county drug trafficking and money laundering investigation.
A federal grand jury indicted the suspects earlier this month on charges of oxycodone trafficking and money laundering conspiracies.
They all pleaded not guilty before federal judges.
The trial has been set for August 28.
The indictments were the result of an investigation by the FDI High Intensity Drug Trafficking Area Drug Task Force, which consists of federal and local officers from across East Tennessee.