State security services have taken the lead in investigating the apparent sabotage of railway lines in northern Germany that brought transport in the region to a halt for several hours, a spokesperson told dpa on Sunday. The state security policing arm of Berlin’s State Office of Criminal Investigation is responsible for investigating politically motivated offences, among other things. However, officials are not ruling out other motives. It is leading the probe after German rail operator Deutsche Bahn said an act of “sabotage” against its communications cables caused massive problems with the …