Fuat Deniz was stabbed by an unidentified attacker on Tuesday afternoon.
Doctors at Örebro University Hospital operated on the victim on Tuesday evening after he had received stab wounds to the neck.
Deniz was stabbed indoors and police have not succeeded in tracking down the attacker.
"We received tips during the night that we are working on now," said police spokesman Torbjörn Carlsson.
Deniz, a Christian Assyrian, moved to Sweden from Turkey with his parents in the 1970s.