KOHAT, Sept 5: Two brothers were killed and two others were critically injured in armed clash between two groups in Mohammadzai on Monday. The brothers, Mumtaz and Jamil, were killed by people of the rival group whose member Gul Aslam was seriously injured in the shootout. A passerby, Sher Alam also sustained injuries. The Cantt police have registered a case and initiated investigations.—Correspondent