The victim in the Howard Industries shooting in Laurel in early May died over the weekend, officials said.
Dale Thornton, 57, died Saturday according to Jones County Corner Burl Hall.
Keith Hinton, 20, was arrested and charged with aggravated assault and attempted murder at that time after he caused a manhunt in the area. He was released on May 7 after posting a $750,000 bond.
Laurel Police Chief Tommy Cox said Sunday that information on upgrading the charges would be available Monday.