Four women and a 9-year-old boy were killed and 200 people were injured when a man drove into a Christmas market teeming with holiday shoppers in the German city of Magdeburg — an attack that has left Germans mourning the victims and with a shaken sense of security.

At least five people, including a 9-year-old child, were killed in the attack, which took place in the eastern city of Magdeburg. The authorities are still seeking a motive.