Smoke development at Rådmansgatan subway station was a smoke cloud.
Police assist the rescue service when smoke development has occurred at Rådmansgatan's subway station.
Station is evacuated and the stairwells are blocked off.
The rescue service locates the origin of the smoke to a nearby garage where a person started a car that has released a huge amount of exhaust gases.
The car owner, a man in his 50s, is fined and the operation is concluded.