Two people have been detained for aiding and abetting murder and aiding and abetting attempted murder following the shooting in Fruängen on Sunday evening, according to the Prosecution Authority.
Another person has been requested to be detained for the same crimes. The detention hearing will take place on Saturday.
The three individuals, who were arrested earlier in the week, are all under 20 years old.
Two teenage boys were injured in the shooting, one of whom died on Wednesday. The condition of the other boy who was shot is considered stable.
On Thursday, a teenage boy was also detained on probable cause suspected of murder and attempted murder.
