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.

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.

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.

A car plowed into a busy outdoor Christmas market in the eastern German city of Magdeburg on Friday, injuring an unknown number of people in what authorities say was a suspected attack. The driver of the car was arrested,

The suspect in the attack in Germany had history of threats and harassment though no record of violence and an ideology that didn’t fit familiar patterns.

The suspected perpetrator involved in the fatal incident at the Magdeburg Christmas market is expected to lose his medical licence, the regional administration for the state of Saxony-Anhalt announced on Friday.

MAGDEBURG, Germany (AP) — Five people were killed, including a 9-year-old, after a Saudi doctor drove into a Christmas market teeming with holiday shoppers in the German city of Magdeburg, officials said Saturday, as people mourned the victims and their shaken sense of security.