Tamil actress Radha on Sunday filed a complaint against criminal Vairam alias Kundrathur Vairam alleging that he made a threat call to her from inside Puzhal Prison. The actor circulated the recording of a phone conversation she had with Vairam. The police are currently probing Radha's complaint and are also trying to find out how the convict got his hands on a cellphone in a maximum security prison.br br Subscribe to OneIndia News Channel for latest updates on movies and related videos.