REUTERS Berlin: A German-Armenian man drove into a crowd in a busy shopping district in Berlin on Wednesday, mowing down a group of teenagers and killing their teacher before crashing through a shop window. The incident happened at around 10:30 am (0830 GMT) just across from Breitscheidplatz, where an Islamic State group sympathiser deliberately ploughed a truck into a Christmas market in 2016, killing 12. At least a dozen people were injured including six who remain in a life-threatening condition, emergency services said. It was not clear whether the crash was intentional. The driver, 29, was being questioned, police told AFP. The silver Renault Clio with a Berlin licence plate first mounted the sidewalk on the corner of Tauentzienstrasse and Rankestrasse, hitting the group of secondary school students on a class trip, before returning to the road. It then rammed into the shop front on Marburger Strasse about 150 to 200 metres (165 to 220 yards) away. A female teacher with the group from a school in Bad Arolsen, a small town in the central German state of Hesse, was killed. A male teacher was seriously injured, the Hesse state government said in a statement.