Moroccan-Dutch kickboxer Badr Hari had tested positive by the anti-doping authority, reports Dutch sports platform NU Sport.
According to the same source, the heavyweight kickboxer used banned substances during his fight against Dutch kickboxer Hedsy Gerges, who had also tested positive.
The two men are not the only ones to use banned substances as Croatian Super Heavyweight Muay Thai kickboxer Mladen Brestovac is in the same situation.
The three athletes might face suspension, including Badr Hari, might face a 4-year suspension.