One person was injured in the fight, but police did not give details on his condition.
“We have found one man. He is being seen by health professionals,” Oslo Police wrote on Twitter.
Police received a report that a man was lying injured on the ground after a fight involving an unknown number of people late on Sunday night.
Shortly thereafter, police wrote on Twitter that three suspects had been apprehended.
No details were given about the cause of the brawl or the total number of people involved.