The Central Bureau of Investigation on Tuesday registered a case in the alleged dope issue of wrestler Narsingh Yadav for a detailed probe.
The CBI took over the case from the Haryana Police which had filed an FIR on July 27.
The case has been registered under Sections 328 (causing hurt by means of poison, etc., with intent to commit an offence), 506 (punishment for criminal intimidation) and 120-B (criminal conspiracy) of the Indian Penal Code.
Wrestler Jitesh has been named in the FIR for allegedly spiking Yadav's "meal or water" before the Rio Olympics in Brazil, sources said.
CBI spokesperson Devpreet Singh did not reveal the name of the wrestler who allegedly spiked Yadav's meal or water, but confirmed that he resided at Daryapur Kalan in Delhi.
"The complainant had made allegations against the wrestler for mixing some restricted material (narcotic) in Yadav's meal or water to stop his participation in the Rio Olympics, for which he had qualified," the officer told IANS.
"It was further alleged that the wrestler was earlier found positive in a dope test," the officer said.
Yadav was tested positive on June 25 for a banned substance ahead of the Rio Olympics, which began from August 5 in Rio de Janeiro.
The Wrestling Federation of India (WFI) on September 16 referred the alleged dope case of Yadav to the CBI.
After arriving from Rio de Janeiro, WFI President Brijbhushan Sharan Singh requested the Prime Minister's Office that the probe be carried out by the country's premier investigating agency.
The complaint was later forwarded to the CBI.
Yadav was cleared on August 1 by National Anti Doping Agency (NADA) and allowed to travel to Rio.
NADA postponed its verdict twice in July and later gave him a clean chit as he was a victim of sabotage done by a competitor.
The WFI also communicated to the world's apex wrestling body, the United World Wrestling (UWW), on August 1 that NADA has cleared Yadav of all the charges and the 26-year-old would be re-included in the team for the category.
UWW gave the green light to Yadav for participation on August 3.
But on August 16, WADA exercised its right to appeal to CAS against NADA's verdict.
Yadav was scheduled to start his Olympic campaign against Zelimkhan Khadjiev of France in the qualification round of the men's 74kg Freestyle category on August 19, a day after his CAS hearing.
Yadav underwent his weigh-in on August 18, the same day when the hearing of his case was scheduled to happen.
But hours later CAS upheld WADA's appeal against the clean chit given to him by NADA and ended all his hopes of participating in the quadrennial event.
The ad-hoc division of CAS heard WADA's appeal against Yadav's clearance and slapped a four-year ban on the Uttar Pradesh-born grappler.
Yadav earlier overcame protracted legal hurdles to participate in Rio after getting dragged into a bitter courtroom tussle by two-time Olympic medallist Sushil Kumar over representing the country.
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