RAUTAHAT: The Rautahat District Administration (DAO) has imposed curfew in the  district headquarters, Gaur, effective from 11 am on Tuesday. The prohibitory order was issued as the cadres and supporters of agitating United Democratic Madhesi Front continued their protests in various parts of the district, including Gaur, from the early morning today. A teenage protester was killed in police firing during a violent protest in Gaur on Sunday.