Shipulin, like many other Russian athletes, has vehemently denied the accusations. He said on Tuesday it's "better to leave now than win spots far from the pedestal" and blamed "the political climate" for his poor results. Shipulin's last race will be in Germany later this week.
The Russian national team was barred from the 2018 Pyeongchang Winter Games in February. The International Olympic Committee issued invitations for 168 Russians who competed under the Olympic flag as "Olympic Athletes from Russia."
Austrian police, meanwhile, said earlier this month they're investigating 10 members of Russia's biathlon team for doping and fraud offenses allegedly committed around the 2017 world championships in Austria. Prosecutors said those accused have been formally notified that they are under investigation but did not name the suspects.
Shipulin dismissed the Austrian investigation as a "witch hunt." No Russian athletes in any sport have yet faced criminal prosecutions for a series of doping scandals that led to the country's team being suspended from this year's Winter Olympics.