Nuremberg (dpa / lby) - A message about a man with a gun triggered a major police operation. Witnesses saw the 22-year-old with a pistol and in the company of two other men in Nuremberg, police said on Sunday. However, when officers surrounded the group on Friday, the weapon turned out to be a blank pistol. He also had a machete with him. The man could not tell the police why he was carrying the gun.