Maybe the officers were infected with pneumonia by the Russians.
Explanations that this was needed to bust an evil plot by the bikers don’t seem to make sense either. This would seem to be one of the worst ways to “expose” any evil plot there was, looking far more like a quintessential fishing expedition. It sounds more like it is attempting to hide behind public disgust at the fight to do anything and everything to the bikers that they can think of, legal or otherwise.