It is still unclear how the man was injured but according to the police he has had some type of stab injuries or similar.

- We are there with a dog patrol, helicopter and the ambulance helicopter have been there and picked him up. He has been injured with a foreign object that has caused damage to the upper body, but we do not know more than that, says Ola Österling, press officer at the Stockholm Police.

Parts of the outdoor area are blocked off

Police hear witnesses on the scene and secure tracks during the evening.

- We have made some observations in different places and therefore blocked off certain parts of an outdoor area, we hope to find traces and technical evidence there, says Ola Österling.

The incident is being investigated as an attempted murder or murder.