Based on what I've seen on this site --
Those allegations aren't new, they've been floating around for a while. I think someone traced them back to one particular right-wing forum, but I don't remember the post and don't have any links to verify that. Someone made a Twitter account the other day alleging to be the underage girl in question. Idk if they've provided any new info that's verifiable and not part of the already-existing body of alleged info. I'd hope that people in his circles would make an attempt to reach out to this individual and get additional verification like what happened on this site with that one doxxing/allegation event, but to my knowledge nothing has been made public about an investigation.