The victims were given first aid on the spot. No one is life-threateningly injured, according to the police.
There are no suspicions of a terrorist or racist motive, but the incident is being investigated as four attempted murders, reports STT.
One person has been arrested for the deed. According to the newspaper Ilta-Sanomat, the arrested person is a man in his 20s, and the arrest is said to have gone smoothly.
There were many people on the spot when the deed occurred, writes Aamulehti. Parts of the shopping center were cordoned off, as well as a square outside, and the police gathered witnesses to the incident inside the shopping center.
Many people on the spot were shocked, reports Ilta-Sanomat's reporter from the spot.