Congress President Rahul Gandhi and his mother Sonia Gandhi are currently on bail in the National Herald case of corruption and funds misappropriation.
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.
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.