The fatal shooting took place in the Boländerna area on May 13 this year.
The 15-year-old is being prosecuted for murder, serious weapons offense and serious crime against the law on flammable and explosive goods in connection with the murder. The boy was arrested by the police while fleeing. The chase was captured on film and shows how he throws himself into the Fyrisån before being arrested.
The 15-year-old was also armed with a hand grenade. Both the grenade and the weapon were found in the river by police divers several months after the incident after "repeated search efforts", the Prosecution Authority writes in a press release.
At the same time, a 17-year-old is being prosecuted for aiding and abetting murder, involving a minor in crime, serious weapons offense and crime against the law on flammable and explosive goods, serious crime.
"Information in mobile phones together with surveillance film is part of the evidence in the case. During the investigation, we have also tried to identify possible facilitators and instigators. Now charges are also being brought against the 17-year-old who we believe provided the 15-year-old with the firearm and hand grenade", says public prosecutor Andreas Nyberg in a comment.
The man who was shot to death had come to Sweden from Egypt in March this year to find a job and earn money, according to UNT. According to a relative, he had traveled to Sweden to save up money for his children's weddings. In Egypt, he had a wife and nine children, six of whom are minors.
The 15-year-old is also being prosecuted for two explosions in the Stockholm area. One explosion was carried out with the help of two hand grenades, the other with a so-called thermos bomb.