An arson attack caused damaged to the train line between Hamburg and Bremen but no one was injured, German police said on Monday. Early in the morning, unknown perpetrators deliberately set fire to a cable shaft on the railway embankment near Bremen’s Bürgerpark using an incendiary agent, police said. Germany’s state security agency is investigating whether the crime was politically motivated. Initially, no high-speed trains between the western state of North Rhine Westphalia and Hamburg were able to travel via Bremen Central Station. Later, long-distance trains travelling to North Rhine Westp…