The man is in his 25s and lives in Skåne, reports P4 Stockholm with reference to prosecutor Lukas Tigerstrand.
Five people have already been detained, suspected of involvement in the murder.
Another suspect arrested in connection with fatal Älvsjö shooting
A man has been arrested on suspicion of aggravated weapons offences in connection with the fatal shooting of a 24-year-old woman at a sports hall in Älvsjö in mid-October.
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