Acting on a complaint, a vigilance team under Deputy Superintendent of Police Maharaj Kanishka Kumar laid a trap and nabbed an ASI from outside the office of Executive Engineer (Planning and Development Department) in Supaul district as soon as he took Rs 10,000 from a person, an official release said.
The ASI, posted at Triveniganj police station, had demanded the bribe in lieu of helping out the complainant in a case, it said.
The officer had taken the bribe for clearing payment of post-retirement benefits of the retired teacher, it said.
The vigilance department has laid 18 traps and arrested 20 government servants so far this year.