May 20, 20.26, Murder/homicide, Attempt, Haninge

Police and healthcare are alerted to a residence in Österhaninge where a man in his 30s has used a knife to injure a man in his 50s. 
Both men have a close family relationship and several other people are at the address.
The suspect is suspected of attempted murder and is arrested by the police. The man in his 50s is seriously injured and is taken to hospital by helicopter. 
Police seal off the crime scene and will conduct a technical investigation.