Commuter train near Barcelona hits collapsed wall killing driver and injuring nearly 40

Incident in Spain took place days after collision between two high-speed trains in Andalucia that killed at least 42

A commuter train has hit a collapsed retaining wall near Barcelona, killing the driver and injuring 37 people, four of them seriously, firefighters have said.

Four people are believed to be in a critical condition after the incident in the Catalonia region of north-eastern Spain, a spokesperson for the region's fire service, Claudi Gallardo, told reporters.