Michel is believed to have paid kickbacks to politicians and officers, in lieu of easy norms for AugustaWestland's parent company to seal the VVIP AW101 Helicopter deal.
NSA Ajit Doval had also pulled out of the Indian delegation to the G20 summit at Buenos Aires last week at the last moment to stay focussed and make sure there was no last-minute snag in the Michel extradition case.
The Prime Minister also spoke regarding the Supreme Court Tuesday's ruling to allow the Income Tax assessment of Congress president Rahul Gandhi and his mother Sonia Gandhi in National Herald case.
An operation named 'Unicorn' was planned and carried out under the guidance of National Security Advisor Ajit Doval and being coordinated by interim CBI Director M Nageswar Rao to bring back Michel.