Olympic champ Simone Biles says she was abused by former USA Gymnastics doctor

Olympic gymnastics champion Simone Biles says she is among the athletes sexually abused by a now-imprisoned former USA Gymnastics team doctor.

Biles, who won four gold medals and five overall at the 2016 Olympics, released a statement via Twitter on Monday saying she is one of the "many survivors" that were abused by Larry Nassar.

Nassar, who spent more than two decades as a physician at USA Gymnastics while also working at Michigan State University, has admitted sexually assaulting gymnasts, possessing child pornography and molesting girls who sought medical treatment.

He was sentenced in December to 60 years in federal prison for possessing child pornography and is facing another 40 to 125 years in prison after pleading guilty to assaulting seven girls.

Biles, now 20, called Nassar's behavior "completely unacceptable, disgusting, and abusive, especially from someone whom I was told to trust."

Biles joins a list of high-profile gymnasts who have come out against Nassar, including six-time Olympic medalist Aly Raisman, 2012 all-around champion Gabby Douglas and two-time Olympic medalist McKayla Maroney.