A spokesperson for the German capital’s fire service told Reuters around 30 people were injured.

“A man is believed to have driven into a group of people. It is not yet known whether it was an accident or a deliberate act,” police said, adding that he was being held at the scene.

The incident took place near the scene of a fatal attack on Dec. 19, 2016, when Anis Amri, a failed Tunisian asylum seeker with militant links, hijacked a truck, killed the driver and then plowed it into a crowded western Berlin Christmas market, killing 11 more people and injuring dozens of others.