A defiant Narsingh Yadav demanded a CBI probe into the doping scandal which has jeopardised his participation in the Olympics. He has alleged that a conspiracy has been hatched to scuttle his Rio dream. Wrestler Narsingh told newsagency PTI, that he has filed a complaint to the federation in which he has made it clear that something could have been mixed in the food that was prepared at the mess.Narsingh has returned positive for a banned substance barely 10 days before the start of the Olympics. The 26-year-old Wrestler would be pleading innocence in front of the NADA panel that is scheduled to meet on Wednesday.Meanwhile, the Wrestling Federation of India, WFI threw its weight behind Narsingh, saying the grappler is a victim of conspiracy. Doubting foul play, WFI President Brij Bhushan said, the federation believes Narisingh is innocent and will support him. He told a press conference in New Delhi that the federation is hopeful that the grappler will get justice.Addressing a press conference in New Delhi, Sports Minister Vijay Goel said, Narisingh is under provisional suspension. He said, 119 athletes will represent India in Olympics.