Ranjit Sinha, the former chief of the CBI, abused the powers that came with his post and must be investigated, the Supreme Court said today.


Sinha retired in December. His last few weeks in office were seeped in controversy and ignominy, with the Supreme Court ordering his removal from his agency's investigation into the massive telecom scam.


The judges accepted that he was guilty of trying to subvert the inquiry against telecom firms and  executives who were charged with colluding with government officials to get out-of-turn mobile network licenses and free spectrum or airwaves.