The incident occurred about 30 minutes before an ABBA tribute concert was set to begin at 7:30 p.m. local time on Tuesday night, the spokesperson said.
About 1,000 people had gathered at the Uppsala Konsert and Kongress in the town of Uppsala, about 70 kilometers (43 miles) north of the capital Stockholm, according to police.
Shortly before the concert started, a man in his 80s fell from the seventh floor and landed on two others – a man and a woman in their 60s – in the open foyer on the ground floor, police said.
The two men died and the injured woman was taken to a hospital. She is out of danger, according to police.
The police are investigating what exactly happened and why the person fell, the spokesperson said.
The three victims have not yet been named by police.