New Delhi:  Christian Michel, the alleged middleman in the AgustaWestland chopper deal extradited by Dubai, has reached New Delhi, sources told NDTV. India is investigating charges that the British national organized bribes to push a 3,600-crore contract for VVIP helicopters to be purchased for top Indian leaders. His extradition came through on a day Foreign Minister Sushma Swaraj held discussions with her UAE counterpart Abdullah bin Zayed in Abu Dhabi.