At least three Maoists were killed in a fierce encounter with police and a huge quantity of arms and ammunition recovered in Orissa's Malkangiri district today. The three-hour long gunbattle took place after a joint team of the elite anti-Naxal Special Operation Group and police raided a Maoist camp in Nuaguda forest. Superintendent of Police Anirudh Singh said that three bodies of the ultras were recovered from the site. He said, another rebel is suspected to have been killed and some others injured in the encounter. The other Maoists fled the scene and disappeared deep into the forest. Many grenades, four rifles, kit bags and ammunition were recovered from the site while security personnel launched an intensive combing operation inside the dense forest area.