A preliminary investigation into aggravated robbery has been initiated and the store has been closed off pending a technical investigation.

- We are trying to get testimonies from the scene, says police spokesman Tobias Ahlén.

Several patrols have participated in the search for the perpetrators.

- It is staff who have been exposed.

We think it's older teenagers who are behind it but it's hard to say because they were masked.

We are trying to get testimonies from the scene, says police spokesman Tobias Ahlén.