n December last year, an agitated Central Bureau of Investigation (CBI) director Amar Pratap Singh walked into the prime minister's office (PMO). He complained that his officers were under pressure to go slow in their investigation against the then telecom minister A. Raja. "I will have to work independently if the Government wants this investigation to reach its logical end," said Singh. If the big guns were interrogated honestly without any political interference, he said, public confidence in the system would improve drastically. Singh was granted a go-ahead.