The residents of Kuststad have today tried to wash away the blood stain outside their apartment building.
It has not succeeded and people take a detour past the spot.
The victim has been taken by helicopter to hospital and the injury situation is unclear.
Brutal violence in broad daylight
The incident occurred at eight o'clock on Friday night and Adam Boman was cooking late supper.
Hear his reactions in the video above.
Concerns among the residents
Last Friday, a 25-year-old woman was shot to death in Notviken and last night a man was attacked by a masked man with a machete.
Most people that SVT talks to on the spot ask themselves what is happening with Luleå.
The police's attitude is that yesterday's attack is an isolated incident.
Arrested in interrogation
During the morning, the police arrested a suspected perpetrator in calm forms.
Interrogations will be held after which prosecutors will decide whether the man, who is in his 30s, should be arrested or not.
Video of the assault illegal to spread
Filmed material on Friday's event has flourished on social media.
The police therefore want to remind that it can be a crime to distribute such material as it may be an illegal invasion of privacy.