To file a complaint against a corrupt official in a government tender process, you can take the following steps:
1. Prepare a written complaint with all details, evidence, and documents related to the tender irregularities or bribe demand.
2. Submit the complaint to the Anti-Corruption Bureau (ACB) or Vigilance Department of the concerned department or state.
3. You may also file a complaint with the Central Vigilance Commission (CVC) if it involves central government officials.
4. Complaints can also be sent online through the official portals of CVC or state vigilance bodies.
5. If needed, file an FIR with the local police or approach a court under the Prevention of Corruption Act.
Maintain records and ensure confidentiality to avoid any retaliation.