Earlier today, we informed you that renowned Indian singer KK passed away last night in Kolkata at the age of 53. It was reported that the vocalist was in Kolkata for a music concert and suffered a cardiac arrest after the event.

But now, it seems that the cops have doubts about his sudden death. The Kolkata Police has registered an unnatural death case at the New Market Police Station over the demise of KK. Sources say that an inquest and post-mortem are underway after getting his family's consent.

As per the police reports, KK's face and head bore injuries. The autopsy would be conducted at SSKM Hospital in Kolkata and the officials would check the CCTV footage at Grand Hotel and talk to the hotel staff and the event organisers. The film fraternity, sports celebrities and politicians are mourning the death of the popular singer.