The October 2021 exam to select 545 Karnataka police sub-inspectors (54,287 candidates) was rigged through Bluetooth-aided answer relays and OMR tampering, surfacing in April 2022 after a Kalaburagi candidate's marks didn't match her sheet. The CID arrested more than 15 police personnel, and on 4 July 2022 arrested the ADGP who headed the recruitment cell — charge-sheeted with prosecution sanction under the PC Act, and bailed in September 2023. The government ordered a re-examination.