January 5 22:28, Assault, severe, Stockholm

Police alarm to Johanneshov due to disturbance from an apartment. In the apartment there are two men and two women who have eaten dinner together. But afterwards, some kind of disagreement has arisen between the men and now one of the men is bleeding from the head. 
Police suspect that he has been assaulted with a blunt object by the other man who is arrested. He is in his 40s and is later detained by a prosecutor and suspected of aggravated assault. 
The bleeding man receives help from an ambulance but is not seriously injured.