The unknown attacked a knife in the city of Tamper in Finland, four people were injured.
According to the police, the attack occurred before one of the local shopping centers.
According to official figures, one person was detained after the incident – a man.
The police emphasized that the attack is not connected with terrorist or separatist activities.
Witnesses of the incident told Yle that the victims were provided first aid right on the spot.
Currently, the police have strengthened security measures around the shopping center, the investigation of the circumstances of the attack continues.