A total of five people are suspected of involvement in the murder.
Two young women and a young man have already been detained on suspicion of involvement in the murder.
The case has received a lot of attention as a 12-year-old boy has previously been suspected of the murder. The boy later contacted the police himself and has been taken into care by social services.
It was around 11 p.m. on December 12 that a man was shot dead in a car. Several people were in the car when the car was shot.
