Russian modern pentathlete Maksim Kustov, excluded from last year's Olympic Games in Rio de Janeiro after being named in Richard McLaren's report into doping in the country, has been banned for four years.
Kustov tested positive for trenbolone, methenolone and oxandrolone when his samples were analysed in a Moscow laboratory in August 2014 "but the findings were not reported as such".
The Russian Anti-Doping Agency (RUSADA) has now said in a statement that Kustov has been given a four-year ban, backdated to October 2016.
RUSADA claimed Kustov had broken a rule regarding the use or attempted use of a banned substance but did not clarify which substance was involved or whether the case was connected to the McLaren Report.
Former world champion Ilia Frolov of Russia was also excluded from Rio 2016 having tested positive for the same three steroids.
Like Kustov, he was implicated in what McLaren described as the "disappearing positive methodology" - where positive samples were switched for clean ones.
Frolov, winner of the individual title at the 2008 World Championships in Budapest, was due to be a reserve for the Rio 2016 competition, while Kustov's place was taken by Ruslan Nakonechnyi of Latvia.
Three other Russians - Aleksandr Lesun, Donata Rimshaite and Gulnaz Gubaydullina - were all eligible based on the International Olympic Committee (IOC) Executive Board's strict criteria, according to the UIPM.
The IOC, who decided against imposing a blanket ban on Russians at Rio 2016, instead leaving the responsibility to the International Federations, ruled any competitor implicated in the damning McLaren Report would not be eligible for the Olympics.