A South African runner is at the epicenter of the latest Olympic Games controversy in Rio de Janeiro.

Caster Semenya, 25, is expected to win the women's 800-meter race, but many of her critics believe she shouldn't be allowed to compete with the women at all.

Why? Well, according to the Daily Mail Online, they're debating if Semenya is even a biological woman.

The news outlet reports that the runner has no womb or ovaries. Furthermore, it reports that Semenya has three times the normal level of testosterone found in women, approaching the levels of a man.

Semenya attributes this to a chromosomal abnormality.

The 25-year-old is pictured in the middle of this portrait.

And this is her in action:

Semenya thinks her treatment and the constant eye on her has been unjust.

"I’ve been subjected to unwarranted and invasive scrutiny of the most intimate and private details of my being," Semenya said, as reported by Daily Mail Online. "God made me the way I am and I accept myself."

That hasn't stopped her critics from projecting even more.

"I believe that it is not unreasonable to suggest that half of the eight-woman 800m final in Rio might well be intersex," Joanna Harper, a physicist and panel member advising the International Olympic Committee on gender issues, said. "And it is not unlikely that three presumably intersex women will sweep the podium."

The speculation swirling around Semenya could only increase when she runs in the women's 800-meter race this weekend.

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