Biles will not compete in the finals for vault and uneven bars. She has yet to decide if she will compete in two further events—the floor and balance beam finals—set to take place on August 2 and 3 respectively.

USA Gymnastics made the announcement via their official Twitter account late on Friday.

Biles had earlier withdrawn from the women’s team final and the individual all-around final, saying she would focus on her mental health.

The USA Gymnastics statement said: “Today, after further consultation with medical staff, Simone Biles has decided to withdraw from the event finals for vault and the uneven bars.

“She will continue to be evaluated daily to determine whether to compete in the finals for floor exercise and balance beam.”

The statement continued: “MyKayla Skinner, who had the fourth-highest score in vault during qualifications, will compete in vault finals for the US alongside Jade Carey, who finished with the second-highest score.

“We remain in awe of Simone, who continues to handle this situation with courage and grace, and all of the athletes who have stepped up during these unexpected circumstances.”

Biles’ decision to pull out of events earlier this week was met with an outpouring of support but it was also marked by criticism in some quarters. The 24-year-old, who is the most decorated Olympic gymnast in history, defended her decision on Instagram on Friday.

“For anyone saying I quit, I didn’t quit,” Biles wrote on Friday. “My mind and body are simply not in sync.”

“I don’t think you realize how dangerous this is on hard/competition surface, nor do I have to explain why I put health first.

“Physical health is mental health.”

Biles has said she has experienced the “twisties.” This is a well-known term among the gymnastics community used to describe when a gymnast loses control of their body as they spin through the air. The twisties can be seriously dangerous for gymnasts, as Biles explained on Instagram.

“Literally cannot tell up from down,” Biles wrote of the experience. “It’s the craziest feeling ever. Not having an inch of control over your own body.”

“What’s even scarier, is since I have no idea where I am in the air, I also have NO idea how I’m going to land. Or what I’m going to land on. Head/hands/feet/back…”

Newsweek has asked USA Gymnastics for further comment.