According to the GBI, the irate customer left the store and came back with a weapon, opening fire. Source: Atlanta Journal Constitution A cashier at a DeKalb County supermarket was fatally shot Monday after she argued with a shopper about wearing his face mask, officials said. The shopper, identified as Victor Lee Tucker Jr., 30, of Palmetto, initially left the Big Bear supermarket after the argument but came back with a gun, according to the GBI.