Three suspects have been arrested following an armed robbery at a Dollar General, according to Henry County police. But the fourth suspect is still on the loose. Police said 20-year-old Lauren Mickens acted as a "look-out" and entered the Dollar General in Ellenwood around 9 p.m. Wednesday. Then, two 18-year-olds, Terence Johnson and Jarria Lewis, were wearing bandanas on their faces when they entered store, at 1786 Panola Road, according to witnesses.