Prosecutors say the death toll in the attack on a Christmas market in the German city of Magdeburg last month has risen to six as a woman succumbed to her injuries.

A top German minister told citizens to be cautious of activity at Christmas markets after its tragic past with attacks around the holidays.

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 suspect in the car-ramming incident at a Christmas market in the German city of Magdeburg had appeared in seven investigative proceedings in the two years prior to the attack, Germany's Frankfurter Allgemeine Zeitung newspaper reported on Saturday.

At least five people are now known to have been killed in the vehicle-ramming attack on a Christmas market in the German city of Magdeburg on Friday.

A sixth person has died following the car-ramming attack at a Christmas market in the eastern German city of Magdeburg. A 52-year-old woman succumbed to her injuries in hospital, a spokesman for the public prosecutor's office in Naumburg told dpa on Monday.