Police are called to Hägerstensåsen due to a man walking with a knife in hand.
When the man was at the same height as Hägerstensbadet, a police patrol spotted the man, who was holding a knife in his hand.
There are no reports that the man was threatening in any way.
Since the man showed signs of drug influence, he was asked to follow the police patrol for testing.
He is suspected of serious crime against the knife law and drug crime.