The Paradip police arrested six youths while they were making bombs in Nimidihi village near Paradip in Jagatsinghpur district.
The police also recovered two crude bombs, a gun, some bomb-making articles, three bikes and a few masks from their possession.
The arrested were identified as Manas Mohapatra of Bhutamundei village, Ranjan Sahoo and Sandip Pani of the Marsaghai area, Bhaskar Hati of Erasama block and Mani Ram Sahoo and Jagannath Sethy from Nimidihi village.
Police said a patrolling team reached Nimidihi village on Wednesday night and raided the Pareswar temple adjacent to the village.
Seeing police, youths started running away from the place but police successfully picked up them after a mild retaliation.
All the accused were produced at the Kujang court and later sent to judicial custody, informed police.