A driver who rammed a car into a crowded Christmas market in the German city of Magdeburg, killing at least five people and injuring more than 200, has been identified by authorities as a 50-year-old Saudi Arabian citizen who had lived in Germany for more than a decade and worked as a doctor.

The suspect in Magdeburg's Christmas market car-ramming attack appeared in front of a judge on Saturday and was remanded in custody.