GHALANAI: At least four people were killed and six others were seriously injured in a clash between two rival groups in Sagi area, some 35 kilometres from Ghalanai in Mohmand Agency on Saturday. According to political administration officials, the incident occurred when a large number of supporters of men who were being detained by the political administration for kidnapping a doctor gathered in Sagi area. "After the protesters blocked the Bajuar-Mohmand, the administration released the men. However, the protesters divided into two groups for unknown reasons and started firing at each other," Assistant Political Agent Islam Zeb told Daily Times. He said that as a result of the clash, Hazrat Nabi, Tawaiz Gul, Umer Gul and Rahim Gul were killed on the spot, while six people received serious injuries. The injured have been admitted to Bajuar Agency and Peshawar hospitals.