A leading Myanmar swimmer has called for an international boycott of his country’s Olympic committee, branding it a “puppet” of the southeast Asian nation’s military rulers, Reuters reported.

Australia-based Win Htet Oo said he had given up his dream of swimming at the Tokyo Olympics in protest at the junta which seized power in Myanmar on Feb. 1 and has killed hundreds in a crackdown on dissent.

Reuters was unable to reach the Myanmar Olympic Committee (MOC) for comment.