Which tweet are you referring to?
SUPPOSEDLY (and I never saw this so it could be.....garbage) but there has been reference that CBS News(?) (or some source) tweeted out 4 shooters at one of the attacks. I’ve seen a couple references to it (this “story”).
Now that just could be a LIE to make folks look bad. But there have been some references to it.
Then again, some “news” source bought the fake names from the airplane crash a few yeas back, too.