Four people were shot in a shooting Friday in Greenville, the U.S. state of North Carolina, said local media. Police sources said the shooting started just before noon. The gunman, armed with a shotgun, first shot a person in front of Kellum Law Firm and then shot three more people at a nearby Walmart, CBS affiliate WNCT reported. Witnesses also recounted that a man with a rifle and a bullet- proof vest walked up and shot someone hiding behind a car. The suspect, who later engaged in a gun fight with the police, was detained after sustaining gun shots. He is not identified. The conditions of the victims were not immediately clear.