A Barcelona commuter train crashed Tuesday after a retaining wall fell onto the tracks, Spanish regional authorities said, killing at least one person and injuring 37 others. The crash in Catalonia in northeastern Spain came just two days after a separate deadly train collision killed at least 42 people in the country`s south and injured dozens more.

Emergency workers Tuesday were still searching for more victims in the wreckage from Sunday`s deadly train accident that took place some 800 km away as the nation began three days of mourning.