A Saudi doctor drove into a market teeming with holiday shoppers in Magdeburg, an official said, as people mourned the victims and their shaken sense of security. Some 200 people were injured.

Police say the driver is under arrest after plowing into the crowd at a Christmas market in Magdeburg, Germany, killing at least five people - including a 9-year-old - and injuring 200 others.

Video showed a car plowing into a large crowd in the city of Magdeburg. The driver, identified as a 50-year-old Saudi Arabian citizen who worked as a doctor, was arrested.

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.

The latest deadly assault on a beloved German tradition illustrates the challenge of holiday safety. For years, Germany has been strengthening security measures around Christmas markets in reaction to an attack in 2016 in which a man killed 12 people by driving a truck into a market in central Berlin.

This is a terrible event, particularly now in the days before Christmas,” Saxony-Anhalt Gov. Reiner Haseloff said.

Germany's interior minister said on Monday it was still too soon to jump to any conclusions about the man suspected of driving his car into a Christmas market in Magdeburg and killing at least five people.