The suspect was charged around 6pm on Wednesday for shooting Steinsund sometime between Monday night and the early hours of Tuesday morning, police have confirmed.
Police inspector Einar Sparboe Lysnes said: “We can confirm that Steinsund was shot and this is also assumed to be the cause of death.”
On Wednesday forensic investigators were still working at the crime scene and the body of the dead man was still not removed.”
Lysnes explained: “That is why Steinsund has not had an autopsy yet.”
The man was arrested after police conducted witness interviews and extensive door-to-door inquiries in the area.
Lysnes says: “We cannot say anything about the shooting at this moment in time, but I can state we do have a clear picture on the incident.”
Police have not ruled out more arrests in connection to the killing.
“Police still want to get in touch with anybody who has information on vehicles and people seen in the area at the time of the shooting,” said Lysnes.
The victim was found dead in his home. Neighbours claimed to have heard the man being repeatedly threatened with murder, reported local newspaper iTromsø.
A female neighbour said: “I heard quite often the phrase 'If you don't open your door, I'll kill you.'"