Japan's wrestling federation says Greco-Roman wrestler Katsuya Kitamura has been banned for two years after testing positive for anabolic steroids

The 25-year-old Kitamura tested positive for drostanolone in two tests after a major national competition in April, where he won the 96-kilogram title.

Kitamura told Japan's anti-doping agency that he took the substance inadvertently through supplements purchased overseas, Kyodo news agency reported.

Kitamura has represented Japan at two world championships without winning a medal.