US gymnast Simone Biles has pulled out of the women's gymnastic all-around event.
USA Gymnastics posted a statement to Twitter saying: "After a further medical evaluation, Simone Biles has withdrawn from the final individual all-around competition at the Tokyo Olympic Games, in order to focus on her mental health.
"Simone will continue to be evaluated daily to determine whether or not to participate in next week's individual event finals.
"Jade Carey, who had the ninth-highest score in qualifications, will participate in her place in the all-around.
"We wholeheartedly support Simone's decision and applaud her bravery in prioritising her wellbeing. Her courage shows, yet again, why she is a role model for so many."