The police are currently silent about the incident and do not want to go into any details, but confirm to SVT that the police have been alerted to a robbery and that no person has been injured.

A teacher is said to have alerted the police that there had been a robbery at the school.

It must be a student who has been robbed and the robber must have threatened with a weapon.

The police do not want to go out with the type of weapon in question.

- I will not leave any details, but when it is a suspected robbery it is about violence or threats and here it is a threat that is the question, says police spokesman Mats Öhman.

Holds interrogations at the school

The police have a number of patrols that work with the case and hold several interrogations at the school.

- We are investigating what has happened and collecting witness information, therefore we are silent.

We want to be able to analyze interrogations and that what emerges in the interrogations is self-experienced and nothing anyone should have seen in the media, therefore we can not disclose any more information at the moment, says Öhman.

A person has been arrested and according to the police, they see that they have a good investigation situation.

They do not want to comment on whether the robber came across any loot.

- Right now we are ensuring that the investigation is complete.

We do this by collecting information and technical evidence.

Otherwise, I can not comment more right now, says Öhman.

It is unclear if there are more perpetrators than the detainee.

The text is updated.