Biles appears to have deleted her account on X following a public feud with Gaines, in which she described the conservative activist as "truly sick."

Government launches Title IX probe after Simone Biles and Riley Gaines clash over transgender athlete’s role in Minnesota girls’ sports championship

Biles’ post to Instagram follows her deleting her X account, which Gaines responded to on Sunday, posting, “Sad to see such a phenom go down like this.”