Caster Semenya will be allowed to compete in races of all distances without medication after the IAAF’s regulations for female athletes with “differences of sex development” (DSD) were temporary suspended by the Swiss Federal Supreme Court.

According to her lawyer, the South African has won her appeal against the controversial IAAF ruling, which required her to take hormone suppressants for track events from 400m to the mile to lower her naturally elevated testosterone levels.

Last month the Court of Arbitration for Sport (Cas) ruled in favour of the IAAF’s rule change, but the Swiss Supreme Court has now enforced a suspension which will remain in place until the 28-year-old’s appeal has been finalised.

​The IAAF has until 25 June to respond to Semenya’s application. The Swiss court will make a separate ruling once the governing body has made submissions as to why its regulations should be kept in place.

The Olympian’s lawyer, Gregg Nott, said: “The court today ordered the IAAF to suspend immediately the implementation of the regulation with regard to Caster and has given the IAAF until the 25th of June to respond to the suspense of effect.

Caster Semenya: Career in pictures Show all 12 1 /12 Caster Semenya: Career in pictures Caster Semenya: Career in pictures Caster Semenya Career in pictures Getty Caster Semenya: Career in pictures 2009 World Championships Semenya wins gold at the World Championships in Berlin, setting the fastest time of the year. Getty Caster Semenya: Career in pictures Caster Semenya and Jacob Zuma Semenya is given a hero's welcome upon returning to South Africa. Getty Caster Semenya: Career in pictures Caster Semenya - 2010 Semenya denied the opportunity to compete in local event because IAAF yet to release findings of gender test. Getty Caster Semenya: Career in pictures 2011 World Championships Semenya wins gold at the World Championships in Daegu. Getty Caster Semenya: Career in pictures 2012 Olympics Semenya's silver medal is updated to gold after Mariya Savinova-Farnosova fails drug test. Getty Caster Semenya: Career in pictures IAAF ruling suspended - 2015 The Court of Arbitration for Sport finds a lack of evidence provided that testosterone increased female athletic performance and notified the IAAF that it had two years to provide the evidence. Getty Caster Semenya: Career in pictures 2016 Olympics Semenya wins gold in Rio. After the race, Lynsey Sharp, finishing sixth, broke in tears on the rule change saying "Everyone can see it's two separate races so there's nothing I can do,"[74] while fifth-placed Joanna Jóźwik reportedly claimed that she was the "first European" and "second white" to finish the race. Getty Caster Semenya: Career in pictures 2017 World Championships Semenya wins gold in London. Getty Caster Semenya: Career in pictures Cas Semenya at Cas Caster Semenya arrives for the landmark hearing. AFP Caster Semenya: Career in pictures Cas passes verdict The Court of Arbitration for Sport pronounces the verdict. Getty Caster Semenya: Career in pictures 2019 Diamond League Semenya wins in the final race before the IAAF's new rules are brought in AFP/Getty Images

“We brought an application for suspension of the regulations which today we learnt was successful.”

After losing her legal case against Cas last month, Semenya struck a defiant tone as she promised to “rise above” the ruling.

She said: “I know that the IAAF’s regulations have always targeted me specifically.

“For a decade the IAAF has tried to slow me down, but this has actually made me stronger. The decision of the Cas will not hold me back.

“I will once again rise above and continue to inspire young women and athletes in South Africa and around the world.”

But CAS said in a statement: “By majority, the CAS panel has dismissed the requests for arbitration considering that the claimants were unable to establish that the DSD regulations were ‘invalid’.