Saudi Arabia had warned German authorities before the Christmas market car-ramming incident about the attacker after he posted extremist views on his personal X account that threatened peace and security, a Saudi source told Reuters.The death toll from the attack at the market in the city of Magdeburg rose to four on Saturday, according to German newspaper Bild, after a suspect on Friday ploughed into a large crowd of visitors.For all the latest headlines follow our Google News channel online or via the app.German authorities are investigating a Saudi doctor, arrested as the suspected driver of the car, with Der Spiegel magazine reporting he had sympathies with the far-right Alternative for Germany (AfD) party.Over 60 people were injured, some of them seriously, when a vehicle drove through crowds gathered at a market in the central city, local officials said. A young child was among the dead.Police said they arrested a 50-year-old from Saudi Arabia who has been living in Germany for