Apparently "the guy that delivers water bottles to the trading floor" of a certain bank was escorted out of the building in handcuffs today, for "installing cameras in the men's bathroom." That's all we know at this time. If you have any intel on the situation, or suspect you may have been filmed yourself, do get in touch!
Update: And we're told from a reliable source it was Deutsche Bank (which declined to comment). Still don't know the in and outs of how this happened, however (are we talking about a live feed? etc).
Update II: For those asking if the person in question was "Steve" the water guy, it categorically was not. Please refrain from leaving his name in the comments.