Underground group United People's Liberation Force's (UPLF) 'Chairman' Dhananjay Dalogopu was killed in an encounter with police in central Assam's Karbi Anglong district on Monday, said a senior police official. Police launched an operation on Monday based on intelligence provided by the Army about the presence of a five-member gang of the UPLF in the Borlangpha area, district Superintendent of Police Mukdhya Jyoti Mahanta said.