A major incident has been declared in the German city of Mannheim after a car reportedly rammed into pedestrians, leaving at least one person dead. Armed police have been deployed across the centre of the city and members of the public have been told to stay away. According to local reports, a black SUV drove at high speed from the city's parade ground towards the water tower into a crowd of people. There are said to be several seriously injured people and numerous emergency services present. It remains unclear whether this was an accident or an attack according to police.