The man was taken to hospital by ambulance, but his life could not be saved.
"We received witness reports that a man had fallen over a balcony railing. 'It didn't look completely natural,' the witness said," said police spokesperson Ola Österling.
The alarm came at 2:30 a.m. on Friday night. When the police entered the apartment, they arrested three men aged 35-40, who were later taken into custody.
"We suspect the three men threw him over the railing. There had been some kind of party going on since late afternoon," Österling said.
The incident is being investigated as a murder, and the three men are all suspects in the crime, according to police.
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