from Pokharia village under Khagarpur police station area in Bihar's Munger district, a police officer said.
Acting on a tip off, the police nabbed the ultra, identified as Fantus Rai while he has gone to village head Kedar Yadav to collect levy from him, Khagarpur police station's Station House Officer (SHO) Rajiv Kumar said.
Four other naxalites who accompanied Rai to the village head's house managed to escape, he said.
The accused, a native of Banka district, was being questioned about his involvement in naxal activities in the district and adjoining areas, Kumar said.
The police had been tipped about movement of Rai and his associates in the area and they had been put on electronic surveillance that paved way for his arrest, the SHO said.