Police are at Älvsjö Old IP due to young people gathering on Walpurgis Night.
Police estimate that 3,000-4,000 youths came from different parts of Stockholm. There has been alcohol and the intoxication rate has been high. Police have confiscated alcohol from youths who shouldn't have it.
There have been disturbances and fireworks have been set off among the crowd. One person has been assaulted and one person is arrested.
At 11 PM, there were approximately 100 people left at the scene and it was calm.
Police are urging parents who have youths out to contact them and take them home from Älvsjö Old IP and the surrounding area.