Police in Finland revealed that they shot a man who reportedly stabbed several people in the south-western city of Turku on Friday.
The man has been taken into custody after being shot in the leg, police said.
BBC reported that the incident took place in the Puutori-Market Square area. One image showed a body on the ground.
People have been warned to stay away from the city centre, saying there may be other attackers at large.
Finnish broadcaster YLE said at least two other people had been injured in the incident.
Other reports spoke of five or six victims.
But there has been no official confirmation of casualties.
A tweet from South-West Finland police read: “Several people stabbed in central Turku. People are requested to avoid the city centre.”
The Turun Sanomat newspaper said several ambulances were at the scene and police were carrying out checks on public transport.