A man intentionally rammed a car into a crowd at a carnival procession in the German town of Volkmarsen, injuring dozens of people including children, police said.
The suspect, a 29-year-old German citizen, was arrested but could not be immediately questioned because he was injured in the incident and being treated by doctors.
He is being investigated on suspicion of attempted homicide.
Police spokesman Henning Hinn confirmed that Monday’s crash was deliberate, adding: “There were several dozen injured, among them some seriously and sadly also children.”
He did not provide further details about the suspect’s possible motive.
Frankfurt police chief Gerhard Bereswill was quoted as saying by local media that 30 people were injured, seven of whom were in serious condition.
The incident took place on the south side of Volkmarsen, outside a supermarket.