Renowned Punjabi singer and film personality Amar Noori received a death threat from an unknown caller.The caller claimed to be a police officer and issued warnings related to her son.As per police sources, the caller identified himself as an inspector and asked her that her son should immediately stop singing and music, or he might face dire consequences.Worried over the threat, Amar Noori informed the Khanna police and lodged a complaint.Mohit Kumar Singla, DSP Khanna, said that acting on the singer’s complaint, a case was registered against the unidentified person. Three suspects were also rounded up by the police and their questioning was ongoing. Meanwhile, security was provided to the singer.