Police have registered a case on charges of extortion against a sub-inspector in Maharashtra's Thane district following a complaint about it from a private cab operator, an official said on Sunday.

The complainant claimed that while he was on way to Golavali in Kalyan area on December 19, 2022, the police sub-inspector (SI) stopped his car at Chakki Naka traffic check post and told him that a fine of Rs 500 was pending against him for violating parking rules, an official from Kolsewadi police station said.