No credible material to act against Raja:
Congress today said there was no credible material to act against Union Telecom Minister A Raja who has come under fire from Opposition for allegedly causing Rs one lakh crore loss to government in allocation of 2G spectrum allocation.
Sri Lankan Tamil-origin billionaire Raj Rajaratnam has pleaded not guilty before a court here to running an insider trading scam that allegedly racked upto US$ 21 million in profits, the biggest such case in the US.