Caster Semenya, a South African athlete who has for years stirred controversy over her gender, rallied her nation together on the last day of the Rio Olympics after winning gold in the Women’s 800 meters final.

However, as South Africans celebrate an historic gold in the race, the International Association of Athletics Federations (IAAF) said that it will go back to the Court of Arbitration for Sport (CAS) to have testosterone-limiting rules reinstated, reported The Globe & Mail.

The rules were suspended in July, 2015, after Dutee Chand, an Indian female sprinter successfully challenged the rules before CAS.

While South African celebrate Semenya as a national hero for being the first black woman from the country to win an Olympic gold, the world see her as a controversial runner who has an upper hand against female competitors.

Semenya hit back at her critics saying that the detractors are violating the basis of sports which is love.

“It’s all about loving one another. It’s not discriminating people. It’s not about looking at people and how they look, how they speak, how they run,” The Sydney Morning Herald quoted her moments after her historic victory.

Social media has been awash in her defense and South Africans started #HandsOffCaster, one of the most popular hashtags since her Olympics victory.

Several athletes and commentators from Britain and U.S claimed that Semenya has unfair advantage over her competitors due to her high levels of testosterone hormone.

Semenya has endured controversy and unwarranted scrutiny into her private life since she made her mark on the global scene in 2009 during the World Athletics Championships in Berlin, Germany.

After upsetting a star-studded line-up in the final, IAAF declared her ineligible to compete for 11 months after pre-race tests showed that she had high testosterone levels.

It reinstated her in July 2010, allowing Semenya to keep the gold and title that she won in Berlin.

The athletics global governing body set up rules in 2011 to regulate women’s testosterone levels, arguing that it gave them unfair advantage over other female competitors.

During the Olympic Games in 2012 in London, a television commentator stirred storm after suggesting that the South African might have intentionally won silver to avoid the scrutiny that could have arose if she won gold.

Semenya’s win at the Rio Olympics came after perhaps one of her most testing seasons on the track. She endured a dip in form that led to some suggesting that hormone medication was affecting her performance, Daily Mail reported.

However, Semenya is not the only Olympic medalist at the centre of gender controversy.

After the final, a reporter asked Francine Niyonsaba of Burundi and Kenya’s Margaret Wambui who won silver and bronze behind Semenya if they have taken hormone suppressants in the past.

After a brief consultation with each other, Niyonsaba, Wambui and Semenya refused to answer.

“Let’s focus first of all on the performance today, let’s not focus on any medication,” Wambui said.

“Tonight is all about performance. We’re not here to talk about the IAAF, we’re not here to talk about speculation, tonight is all about performance. This press conference is all about the 800m that we ran today,” Semenya reiterate.