Yet another attack.
"A van has ploughed into crowds in Barcelona's Las Ramblas tourist area.
Police are reporting that people were killed in the "massive crash", and emergency services are urging people to stay away from the Plaça de Catalunya.
People took cover in nearby shops and cafes, while emergency services have requested the closure of local metro and train stations.
El Pais newspaper said the driver of the vehicle had fled on foot after mowing down dozens of people.
Other media reports say police are treating the incident as a terror attack, and that one or two armed men have now barricaded themselves inside a bar in the area."
http://www.bbc.com/news/world-europe-40965581