That wouldn't be an issue even if they weren't tried. Alleged is one of those words that you can add to make it factually correct, as long as someone is making the allegations. Repotrting on facts is always fine (in the US at least). Now the person making the allegations could be libeling them, but not the group reporting it.
But if the reporting organization knows that the person making allegations is libelous then they're also guilty of it. Again, though, none of that matters in the context of Tate.