It was called already during the first half. Several resting Celtic supporters then lit Bengals at the stand and after one of them threw a Bengal at a public host, guards were forced to act and step into the stand.

Thanks to surveillance cameras, the Swedish police, in collaboration with the Scottish police, were able to identify the person who was arrested at half time.

According to Henrik Koch, who is security manager at AIK, three more people were arrested. One of them for unlawful intrusion after rushing towards the inner plan in connection with one of the targets.

- I think we have done a great job and acted on what has happened here. Now I assume that Uefa will report this. They have had both a security delegate and a regular delegate in place to see how everything works.

AIK lost the meeting by 1-4, a total of 1-6.