The Central Bureau of Investigation on Tuesday registered a case in the alleged dope issue of grappler wrestler Narsingh Yadav for a detailed probe.
The case was registered by the CBI on the request of the Haryana government and further notification from the government of India, said a CBI officer.
The CBI had taken 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, 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 up 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, Brazil.
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.