The incident occurred early morning when a squad of CRPF along with state police personnel was out on a patrol in the Karampada-Jambaiburu and Kiriburu forests of the district, officials said.
A 15 kg claymore mine, six blasting triggers and four detonators were seized during the operation, they said.
The improvised bomb was defused later and a possible Naxal ambush trap was averted, they said.