On Saturday, a person who was arrested in their absence was apprehended. The person, who is over 18 years old, is arrested on probable grounds suspected of being involved in the murder, according to the police on their website.
Two people under the age of 18 have been arrested previously.
During the night, we apprehended and arrested two people, they are reasonably suspected, i.e. the lower degree of suspicion, said police spokesperson Magnus Jansson Klarin to TT earlier on Saturday.
The police increased their presence in Gävle during the day, both for security and crime prevention reasons, according to Jansson Klarin.
The alarm about a violent crime occurring in the Öster district came in at around 5 pm on Friday.
The police were initially very tight-lipped and only wanted to say that one person had been taken to hospital. It wasn't until around 10:30 pm that the police confirmed that one person had been shot to death.
