The detainee is suspected of murder or manslaughter after a 25-year-old man was found shot to death Satruday in a stairwell in Fittja,

“He was arrested on the basis of observations made of him and his behaviour after the crime,” Stefan Färdigs, a spokesperson for Stockholm County police, told the TT news agency.

The victim, a man born in 1984 and known for past crimes, was found at about 4.30pm, according to reports.

When the ambulance arrived at the scene, rescuers immediately began working on him.

“They tried to revive him, but regarded it as useless,” said Färdigs to the TT.

Several empty shells were found in the staircase, suggesting that it was also the scene of the crime.

Authorities would not comment as to how many shots wounded the deceased nor would they provide details about the caliber of the weapon used.

Police officers followed up on witness information from people near the area of the crime scene.

Shortly before 9pm Saturday authorities arrested the 32-year-old man without incident in his Botkyrka home as a suspect for the crime.

“The suspect is known by police,” said Färdigs.

Police knocked on the doors of others in the neighbourhood, looking for witnesses.

The stairwell was cordoned off for forensic examination.

No other suspects have been identified at this time but police do not rule out that there may have been others involved.

Authorities continue to question people in the area.