At least three police officers were killed and several others injured in a shoot-out in the US state of North Carolina on Monday afternoon. The police officers had visited a man with a criminal record in the city of Charlotte to serve an arrest warrant for illegal possession of a firearm, said the police chief in charge, Johnny Jennings, at a press conference. When they arrived at the wanted man’s home, a man in the front yard had opened fire. The police officers then also fired and killed the shooter, Jennings said. However, further shots were also fired from the house. The police finally man…