Three policemen were injured when protesters hurled a petrol bomb at their vehicle in Maisthan of Birgunj today. The protesters attacked the police vehicle with a petrol bomb while they were providing security to the house of congress lawmaker, Rajendra Bahadur Amaatya, from protesters who had resorted to vandalism on the house. Police Constables Krishna Bahadur Nepali, Raju Yadav, and Raj Kishor Yadav have been identified as the injured security men.