Army sources said soldiers of the Mahar Regiment launched an operation at Manjoor village under Magrijuli police station and picked up the three persons from a house.
The jawans recovered from them three Chinese hand grenades, an Indian hand grenade, a detonator, a pistol with magazine and eight rounds of bullets and four bullets of AK-47 rifle.
During interrogation the arrested persons said they belong to a newly-formed Adivasi militant outfit.
