A man has been stabbed indoors in Hässelby in western Stockholm.
Several witnesses have stated that a man has been attacked with a stabbing object, says Anders Bryngelsson, press spokesperson for the Stockholm police region.
The injured man has been taken to hospital by ambulance and the extent of his injuries is unclear.
The alarm was raised at around 20:30 on Tuesday.
The police have launched a preliminary investigation into attempted murder.