LIWANG: At least five persons were injured when a clash erupted between the cadres of Nepal Student Union and the All Nepal National Independent Student Union-Revolutionary in Khungri, Rolpa on Monday. According to sources, Sher Bahadur Thapa, chairperson of NSU Rolpa sustained injuries with his other comrades. The clash occurred when the NSU cadres were forming units in the Khungri Secondary School. Following the incident, the NSU Rolpa has called a transportation bandh in the district protesting the events.