Japanese race walker Koki Ikeda, a former Olympic silver medalist, has been banned for four years for doping, the Athletic Integrity Unit said Friday.

Olympic gold medal equestrian rider Eric Lamaze has been banned from the sport until 2031 following new sanctions handed down by the Court of Arbitration for Sport.

Tokyo Olympics racewalking silver medallist Koki Ikeda has been banned for four years for using or attempting to use a banned drug, the Athletics Integrity Unit said on Friday.