A West Virginia man already serving a 20-year drug sentence will now spend even longer in prison. Velarian Carter was sentenced in July to an additional 20 years for orchestrating a drug conspiracy while he was behind bars.

Investigators say he was at the center of a drug conspiracy flooding the state’s Raleigh County and nearby areas with illegal drugs, including cocaine, crack, and heroin.

FBI Pittsburgh Special Agent Jennifer King is no stranger to Carter’s activities—she was part of the team that initially investigated Carter in 2016, uncovering his conspiracy to transport methamphetamine from California to West Virginia. For those crimes, he was arrested in March 2016, pleaded guilty in July 2016, and sentenced in February 2017 to his original 20-year term. Carter’s Mexican cartel contact in California was also charged and is serving time in prison.