Sometime between three and a half past four in the afternoon last Wednesday, the 23-year-old man was shot to death in the parking garage at Riggenhuset in central Karlshamn.
A man in his late teens is in custody on probable cause on suspicion of the crime, but denies the crime.
Now the police choose to go out on social media to call for more witnesses.
They write that they want contact with anyone who has any kind of observations, information or tips that can lead the investigation forward.
Arrested in Lund
The suspect was arrested at the central station in Lund, after getting there by train on Wednesday evening.
According to the prosecutor, the two involved had met in Karlshamn earlier in the day, and the man has also admitted that he was at the place where the 23-year-old was shot to death.
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Karl Hamstedt is the teenager's defense lawyer: "He denies the crime" Photo: SVT