A car plowed into a crowd at a Christmas market in eastern Germany, local media reported.
At least one person was killed and several injured in the incident in Magdeburg, according to German public broadcaster MDR.
The suspected driver of the car has also been arrested, MDR said, citing a government spokesman.
Video on social media showed scores of people lying on the ground and emergency services attending.
A “large-scale police operation” is underway and the market is closed, according to local authorities.