( CNN ) -- A gunman shot four people in Greenville , North Carolina , before being shot by police , Mayor Allen Thomas told CNN . Shortly before noon , the gunman approached and shot one person in a parking lot at the Kellum Law Firm and then three people in the parking lot of a Walmart , police said . The man , armed with a shotgun , was walking through the Walmart parking lot when he disobeyed police orders to drop the weapon , police said . He fired the shotgun at police officers , who returned fired and shot him , police said . Even after he was wounded , the gunman refused to comply with police commands to surrender , and officers used the cover of a vehicle to approach and arrest him , police said . The victims were transported to a hospital . Their conditions and that of the gunman were not known . The incident occurred near Landmark Street and Greenville Boulevard , police said .
A man with a shotgun shoots one person in a Greenville law firm parking lot . He then shoots three people in a Walmart parking lot . The shootings happened at about 12:30 p.m. on the same day that police were investigating an armed robbery of a South Carolina bank and a shooting outside a convenience store in North Charleston.