Four lower-rung Naxals have been arrested from Maoist-hit Sukma district during a search operation, police said on Tuesday. They were picked up on Monday evening near a hill in Morpalli village forests under Chintalnar police station area by a team of the District Force, a police official said. The arrested persons, identified as Madkam Kosa (20), Milkam Joga (22), Madvi Joga (27) and Barse Deva (20), have been active as janmilitia and as the members of Dandakaranya Adivasi Kisan Majdoor Sangthan (DAKMS), a front body for Maoists, he said.