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.
Alijo Joseph is a Congress party leader, and he is the national in-charge of the legal department of Indian Youth Congress, the youth wing of the party.
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.