A 16-year-old boy arrested for a shooting in Uppsala, which killed three people, has been released as suspicions against him weakened. Two men, aged 25-35, were arrested for incitement to murder, while a third, about 20, was arrested for murder. The motive is unclear, but gang links are being investigated. The victims were found in a hair salon, and at least one may have had criminal connections.

Swedish investigators announced on Friday that they had released a 16-year-old boy previously arrested in connection with a shooting that resulted in three fatalities. The release came after the suspicions against the teenager weakened significantly. Meanwhile, three other individuals have been taken into custody.

The incident occurred on Tuesday in central Uppsala, a university city located approximately 60 kilometers (around 37 miles) north of Stockholm. The victims were between the ages of 15 and 20.

Lead prosecutor Andreas Nyberg stated that the 16-year-old was no longer considered a suspect. “During the time of the arrest, suspicions against the 16-year-old individual have weakened. He is no longer a suspect in the crime,” Nyberg explained.

Authorities have since arrested two men aged between 25 and 35 on Thursday on suspicion of incitement to murder. A third person, about 20 years old, was taken into custody overnight from Thursday to Friday on suspicion of murder.

Investigators are still working to determine the motive behind the killings and are currently exploring the possibility of links to gang-related activity.

The victims were discovered inside a hair salon, which is believed to have been the scene of the shooting. According to witness accounts, two of the victims were clients seated in barber chairs when the assailant, described as masked and dressed in dark clothing, entered and fatally shot them in the head.

While Swedish media have reported that at least one of the victims may have had ties to organized crime, the police have not confirmed those claims.