South Africa's two-time Olympic champion Caster Semenya has filed a lawsuit in the European Court of Human Rights challenging restrictions of testosterone in female athletes, her lawyers said Thursday. The World Athletics governing body in 2018 banned Semenya and other female athletes with differences of sexual development (DSD) from races between 400 metres and a mile unless they take hormone-suppressing drugs. 

Semenya, 30, unsuccessfully challenged those rules at the Court of Arbitration for Sport (CAS) and the Swiss Federal Supreme Court. On February 19, she made another fresh attempt -- taking the matter to the European Court of Human Rights in Strasbourg. "Semenya's ongoing fight for dignity, equality, and the human rights of women in sport took a crucial step forward with the filing of an application" to the ECHR, her lawyers Norton Rose Fulbright, announced in a statement.