At least two persons were killed while many others sustained injures when two armed groups clashed here in Charsadda over old feud on Wednesday, police said. The incident took place on Nowshehra Road at Azam. Two rival armed groups opened fire on each other. As a result, two persons died on the spot while many other sustained serious injuries. The deceased identified as Fayaz and Abdullah. After the incident police reached on the spot and shifted the bodies and injured to hospital. Police registered case and started investigation.