A poacher, suspected to have killed a rhino recently in the Kaziranga National Park, has been arrested with arms in Biswanath district. A rhino was killed in the Northern Range of the Park on February 10 and forest guards recovered a .303 rifle along with 23 rounds of ammunition and a silencer in a paddy field. Following the recovery of the arms and ammunitions, the police and forest guards launched a joint operation arrested a poacher. Search is on for another person who is suspected to have taken the horn after killing the rhino.