A 25-year-old man was shot to death with multiple shots inside a pub in Midsommarkransen in southern Stockholm on Saturday evening.
The man was taken to hospital but died of his injuries, according to the police.
The shooting was witnessed by several pub patrons.
"Arrests have been made within the framework of the investigation," the police wrote on their website just before 3 am on Sunday.
The alarm about the shooting came just before 11 pm. A large police operation has been ongoing in the area during the night.
The police have initiated a preliminary investigation into suspected murder.