Commuter rail service in Catalonia, Spain, was suspended Wednesday after a Barcelona train crash killed one person and injured 37 others. The crash happened Tuesday night when a train hit a retaining wall near Gelida. This incident follows Spain's worst railway disaster since 2013, which occurred Sunday in southern Spain, raising the death toll to 43. Authorities are investigating both crashes. Rail disruptions Wednesday caused significant traffic jams into Barcelona. Spain's railway operator said heavy rainfall likely caused the retaining wall to collapse. Three days of national mourning are underway as officials continue their investigations.

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