January 18, 4:18 PM, Murder/assault, attempted, Stockholm

Police are on the scene to secure the crime scene and to search for a potential perpetrator. 

Update 5:10 PM
A preliminary investigation into an attempted murder has been launched.
The injured person is being flown to the hospital by ambulance helicopter.
A work is ongoing to secure the crime scene, speak with witnesses, and search for the perpetrator. 

A number of people have been checked in the work of locating the perpetrator. 

Update 5:52 PM
A man has been arrested, currently suspected of attempted murder. 

The condition of the victim, who is an 80-year-old person, is reportedly stable. 

Police continue to work on technical investigation, witness interviews, and door-to-door questioning to map out the course of events.