Flames engulf cars near the Viareggio railway station on June 30 after two gas-filled railway carriages exploded in the northern Italian city of Viareggio, killing one person and injuring 50, the Lucca province authorities said. The explosion came as the train was approaching the station in the coastal city of 50,000 inhabitants northwest of Pisa shortly after midnight, possibly due to a derailment, the Italian news agency ANSA reported.