Minister of State in Prime Minister's Office, V. Narayanasamy today defended Prime Minister Manmohan Singh and ruled out his involvement in the coal scam. Talking about the issue, Narayanasamy held the companies responsible for furnishing illegal documents. Narayanasamy insisted that the government functioned in a transparent manner and added that all the decisions were taken keeping in mind the welfare of the people. Talking about anti-graft activist Anna Hazare he said that was surrounded by anti-social elements.