In the center of the Slovakian capital Bratislava, a car drove into a bus stop on Monday night, killing at least four people.
According to the police and fire department, at least seven other people were injured.
At the bus stop on the edge of the historic old town, there were numerous people waiting for buses to go to Petrzalka, the most populous district south of the Danube.
It was initially unclear why the car drove into the waiting crowd.
According to media reports not confirmed by the police, the driver is said to have been drunk.
There were initially no indications of a terrorist intention.