A businessman was gunned down while another was wounded when unknown masked armed men opened fire at them in Chaman on Monday. According to the Police, the victim identified as Nazar Jan and his colleague Soorat Khan were in their shop when unidentified masked armed men sprayed them with bullets and escaped from the scene. As a result, Nazar Jan died on the spot while Soorat Khan sustained serious injuries. The injured was admitted to hospital for medical treatment. The Police is investigating the matter.