The accused were identified as Assistant Engineer Awadh Bihari Soni, Ali Hussain Saini, ARO, and meter reader Bhagirath posted at Bhaterdi, the spokesperson said.
The accused had demanded a bribe of Rs 13,000 from a client of flour machine operator for "adjusting" bill of Rs 64,000, which the complainant claimed was wrong, they said.
The deal was struck at Rs 10,000, and a trap was organised in which all of them were caught red handed, the spokesperson said.