WICHITA, Kan. (AP) — A man serving a 90-year sentence for participating in the 1993 murder of a Kansas corrections officer is charged in a 55-count federal indictment with running a drug ring from his Oklahoma prison cell.

The U.S. attorney's office said in a news release Wednesday that 47-year-old Travis Knighten was the brains behind a criminal organization that distributed methamphetamine, heroin, cocaine powder, crack cocaine and marijuana in Wichita. No attorney is listed for Knighten in online court records.

Prosecutors said he used cell phones that he obtained while in custody to direct...