Police have filed an extortion case against Mumbai Deputy Commissioner of Police Akbar Pathan and two other cops, one of them arrested for the killing of businessman Mansukh Hiran, on a complaint by a man who is an accused in a cheating case, an official said on Thursday.

The complainant, Gurusharan Singh Chavan, faces a cheating case lodged at the Andheri MIDC police station in suburban Mumbai last year. He is one of the accused in a criminal case related to cheating people on the pretext of selling a "rice puller" metal device, claiming it had magical properties to pull rice out of grains, police said.