A half-dozen Baton Rouge residents were among eight people indicted by a federal grand jury in an extensive probe into a drug trafficking network operating in the Baton Rouge region, U.S. Attorney Walt Green announced Thursday.

The investigation, an effort by the Organized Crime Drug Enforcement Task Force Program, is dubbed Operation Road Block.

Those from Baton Rouge charged in the indictment are Joell Leggins, 39; Marcus Thornton, 38; Lamont Jackson, 39; Broderick D. Mathes, 37; Robert Williams, 37; and Caprice Morgan, 28.

Wilbert Mathes, 38, of Zachary, and Damond Reynard Lockett, 40, of Port Allen, also were indicted.

All but Morgan face drug conspiracy charges. Morgan is charged only with misprision of a felony, or having knowledge of a crime but failing to report it to authorities.

Brothers Broderick and Wilbert Mathes also each face a charge of possession of firearms by a convicted felon.

The federal, state and local operation is being handled by the U.S. Attorney’s Office in Baton Rouge, U.S. Drug Enforcement Administration, Baton Rouge Police Department, the sheriff’s offices in East and West Baton Rouge parishes, Louisiana State Police, and the Bureau of Alcohol, Tobacco, Firearms and Explosives.