Jonathan Hilliard / Bradley County Sheriff's Office
Three Bradley County Jail inmates have been charged with second-degree murder in connection to a February fentanyl overdose death, according to the Bradley County Sheriff's Office.
An investigation by the Sheriff's Office and the 10th Judicial District Drug Task Force determined that Brandon Tyler Pelfrey, Autumn Johnson and Jonathan Hilliard had taken part in selling Dustin Cox a lethal dose of fentanyl. He died Feb. 24. The inmates were served with indictments May 24, according to a news release from the Sheriff's Office.
Additionally, Pelfrey, Hilliard and Johnson were charged with possession of schedule II narcotics. Hilliard was also charged with possession of a firearm while committing a felony offense.
Brandon Tyler Pelfrey / Bradley County Sheriff's OfficeAll the inmates were arraigned on the charges and are being held at the jail without bond, according to the release.
Tennessee's 10th Judicial District covers Bradley, McMinn, Monroe and Polk counties. 
Autumn Johnson / Bradley County Sheriff's Office
— Compiled by Kim Sebring