A complaint in this regard was received on behalf of the 49-year-old actor, whose next film "Bajrangi Bhaijaan" is slated to hit theatres on July 17, more than a week ago, police said today.
"A written complaint was given more than a week ago by Khan's manager alleging that someone tried to besmirch Khan's reputation by circulating a false and mischievous post about him on WhatsApp," said Deputy Commissioner of Police (Detection) Dhananjay Kulkarni.
The case, in which no one has been arrested till now, is being probed by Cyber Crime wing of Crime Branch. Police declined to divulge the content of the post.