One of the dead has been identified as ULFA cadre Rajiv Das. It is yet to be ascertained if the two others - Goda Pegu and Bhaben Pegu - belonged to the ULFA.
The injured were identified as ULFA linkman Bogai Das and a minor Ropan Toplai
Acting on a tip-off about presence of a group of ULFA militants in the house of a linkman in south Majuli, a joint team of the police and CRPF personnel launched a joint operation in the Ahatguri area of the island, police sources said.
The militants opened fire at the security personnel in a bid to escape and an encounter followed in which three persons were killed and two, including the ULFA linkman and a minor, were seriously injured.
The dead and the injured were brought to Jorhat Medical College Hospital by helicopter.
A combing operation in and around the encounter site was continuing, the sources said.