The only female athlete to win an Olympic medal for Iran announced this weekend that she had defected from the nation because of “hypocrisy, lies, injustice and flattery” and said she had been used as a “tool.”

The Olympian, Kimia Alizadeh, 21, announced her decision in an Instagram post accompanied by a photo from the 2016 Summer Games in Rio de Janeiro, where she won a bronze medal in taekwondo.

“They took me wherever they wanted,” she wrote. “Whatever they said, I wore. Every sentence they ordered, I repeated.”

Her comments came during a time of especially heightened tensions in the country after the Iranian authorities announced this weekend that the country’s forces had unintentionally downed a passenger plane last week near Tehran, killing all 176 people on board. The admission prompted outrage in the country and set off a series of protests over the weekend.