India's wrestler Sandeep Tomar with Turkmenistan's Rustem Nazarov in the men's freestyle wrestling 57kg qualification round at the Asian Games 2018 in Jakarta on Sunday August 19 2018. (Photo: AP)

A wrestler from Turkmenistan became the first doping case at the Asian Games and has been disqualified, the Olympic Council of Asia said on Friday.

Rustem Nazarov tested positive for the banned substance furosemide, a masking agent, in a pre-tournament urine test last week, the OCA said.

Nazarov “has been disqualified from the 18th Jakarta-Palembang Asian Games 2018... and his results during the competition held on the 19th August annulled”, a statement said.

The athlete, 24, had competed in the men's 57kg freestyle event and was defeated in his first match by India's Sandeep Tomar.