Belarusian athlete Tsimanouskaya, 24, had been due to compete in the women's 200 metre heats on Monday but said that on Sunday she was taken to the airport to board a Turkish Airlines flight.
Masked and wearing blue jeans, a blue blouse and sunglasses with "I RUN CLEAN" written on them, Tsimanouskaya had arrived in a police-escorted van at Narita airport east of the Japanese capital.
Poland, which has long been critical of Lukashenko and harboured many activists from Belarus, has granted her and her husband humanitarian visas.
'We are not the ones who made the decision, we are only executing it,' Tsimanouskaya said the two officials told her. The two officials had told her the order to send her home came from "high up" in Belarus.
Darya Dolidovich and her family are now in Poland, where she hopes to continue training
From sharing medals to defections to gestures on the medals podium to punching horses, the Tokyo Olympics had it all.
Australian swimmers have swept the podium, broken world records, set milestones and won a mountain of medals at the Commonwealth Games pool but all anyone wants to talk about is a supposed 'love triangle' with golden girl Emma McKeon at the centre.
Olympic medallist who fled Belarus forced into exile again as Ukraine attacked
Images for Sunday's closing ceremony at the Tokyo Olympics.