Belarusian sprinter Krystsina Tsimanouskaya took refuge in Poland on Wednesday after refusing to return to her authoritarian homeland from the Tokyo Olympics in a saga reminiscent of Cold War sporting defections.

The 24-year-old athlete's case could further isolate Belarusian President Alexander Lukashenko, who is under Western sanctions after a crackdown on opponents since last year.

Tsimanouskaya caused a furor on Sunday when she said coaches angry at her criticism had ordered her to pack and go to the airport. She refused to board a flight home and sought protection from Japanese police.