A landslide caused a passenger train to partially derail in the Swiss Alps Wednesday , injuring at least six people , regional police spokesman Peter Faerber said . The train was headed from St. Mortiz to Chur in eastern Switzerland when at least two carriages derailed near Tiefencastel , said Simon Rageth , spokesman for the Raethische Bahn rail company . A rescue operation was under way Wednesday afternoon , said Faerber , a spokesman for police in the Swiss canton of Graubuenden .
At least two train cars derailed near Tiefencastel , Switzerland , rail company says . Six people were injured , police say .