No, police and citizens have been unable to follow them back to their place of origin.
Sounds like the police need some drones.
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Sounds like there’s going to need to be some regulations and air traffic control mechanism for drones—so much is often behind the curve with respect to technology these days.
You are prescient! Get this, the cops say no local laws cover airspace above private property and they can't charge the drone owners with anything even if they find them.