ATLANTA ( WUPA ) -- An inmate in a Georgia state prison has been convicted of leading what authorities say was a multi-million-dollar drug trafficking and money laundering operation while in custody.

Jarvis Matthews, 46, was already serving a life sentence without parole on murder and felony charges at the Calhoun State Prison.

Prosecutors say Matthews used contraband cellphones to direct his fiancée, girlfriends, nephew, and two adult sons to distribute drugs and launder money around metro Atlanta.

The investigation into Matthews began in 2022, when FBI agents identified a social media account they say was used by Matthews for drug deals. Authorities say the undercover agents bought two kilograms of methamphetamine through Matthew's son, Charvis Harris, who has pleaded guil

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