Oh the possibilities...
The only question now is whether or not Swedish police will have the means – or the inclination – to try to prosecute drone fliers. It could well be they have neither.
I read the above and immediately saw (in my mind's eye, that is) a squadron of drones with flashing blue LEDs and little sirens chasing illegal camera - equipped drones.
Failure to stop? Then "Tactical Contact" or "TPAC" as appropriate. Or a net strung between 2 of them.
Give the Swedish Police the means and they will immediately find the inclination.
I mean...who wouldn't?