Two people have been killed and six others were injured in a stabbing incident in the western Finnish city of Turku, police said.
A suspect is in custody and being treated in hospital after officers shot him in the leg.
Security is being stepped up across the country in the wake of the incident, Finland's interior minister Paula Risikko said during a news conference.
A search is still under way for more potential suspects in the city, officers said earlier.
Finnish broadcaster YLE said several people were seen lying on the ground in Puutori square in central Turku.
On Twitter, police urged people to avoid that part of the city, which is about 90 miles west of the capital, Helsinki.
One person has been "apprehended," Finnish police said, adding "several people had been stabbed".
Prime minister Juha Sipila said the government is closely monitoring the ongoing police operation and will hold an emergency meeting later.