Just before 5 pm on Friday, the police were alerted to the scene, a bit outside Bålsta.
- We sent a large resource.
About ten people were in the room and they were of course shocked by what they had been through, says Daniel Wikdahl, spokesman for the police.
The police operation is ongoing
According to the police, a person must have set off an alarm in connection with the armed perpetrators entering the premises.
According to the authority, the perpetrators then stopped the robbery and left the scene.
On the way out, they must have brought goods of an unknown value.
The police actively searched for the perpetrators, but by 20 o'clock no one had been arrested yet.
- We are more in an investigative situation right now, says Daniel Wikdahl.
The police classify the incident as a gross robbery.