Update 2

After earlier reports that Biles withdrew over a “mental issue,” team USA now says it was a “medical issue” and she “will be assessed daily to determine medical clearance for future competitions”:

Update 1

We’re seeing reports that a coach told NBC Sports that it’s a “mental issue” and not an injury:

She did post about about the pressure she’s under on Instagram on Monday:

Original post

Breaking news out of Tokyo where we’re seeing reports that U.S. gymnastics superstar Simone Biles will not be competing in the team finals:

She had left the arena earlier with medical staff after reportedly struggling on the vault:

We’ll keep you posted:

“The entire Olympics just changed”:

Editor’s note: This post has been updated.