He is suspected of murder, attempted murder, and aggravated weapons offense. According to P4, he has been detained for all suspected crimes.
The boy, who is registered at an address in Stockholm, denies the crimes.
A 16-year-old girl and a 28-year-old man have already been detained for involvement in the murder.
The girl, who denies the crimes, is detained for murder, attempted murder, and aggravated weapons offense.
The 28-year-old man, who also denies the suspected crimes, is detained for aiding and abetting murder and aiding and abetting attempted murder.
It was on the evening of December 16 that a 30-year-old woman was injured in a shooting in a multi-family house in the Teleborg district. She was taken to hospital, but her life could not be saved. A 30-year-old man was also slightly injured.
