Rail traffic in parts of Germany was disrupted after seemingly coordinated arson attacks early Monday morning on segments of track, sparking security fears in the run-up to the G20 summit in Hamburg next month. Police in the Saxony region of Germany said there were 12 incidents of arson nationwide between 1 a.m. and 4:30 a.m. Monday on railroad tracks of national rail operator Deutsche Bahn. The statement said the police found fire in trackside cabling at each of the incidents and believe they were part of a coordinated plan. German media cited security fears connected to the upcoming G20 meeting.