A Clayton County jury has convicted a man of aggravated sexual battery and false imprisonment in a 2020 case only to learn he was already behind bars on a separate murder charge.
Prosecutors say Shymik Mewborn was found guilty after a trial that detailed an assault that happened during a house party in Riverdale.
According to the Clayton County District Attorney’s Office, the victim told authorities she began feeling ill after drinking alcohol at the gathering on June 28, 2020. She went to lie down in a bedroom when Mewborn entered the room and sexually assaulted her while holding her against her will, officials said…