Belarusian sprinter Krystsina Tsimanouskaya early on Wednesday left the Polish embassy in Tokyo, where she had sought protection after refusing her team’s orders to return home.
Her refusal to board a flight home, after she said she was taken by her team to the airport against her wishes, caused high drama at the Tokyo Olympics.
A darkened van left the compound with police escort around 7:05 am (2205 GMT on Tuesday), shortly after luggage had been loaded into another van.
A police official confirmed to Reuters that Tsimanouskaya was in the vehicle.
She was expected to go to Poland, her supporters have said. Warsaw has offered her a humanitarian visa.
The International Olympic Committee said on Tuesday it was expecting a report from the Belarusian team on Tsimanouskaya’s case.
US Secretary of State Antony Blinken accused Belarus President Alexander Lukashenko’s regime of intolerable “transnational repression” in the matter.
