At least 13 people have died and 50 have been injured after a white van ploughed into a crowd of people in Las Ramblas area of Barcelona, in what Catalan police say is a potentially ongoing terrorist attack.
Police also confirmed they have arrested a man they are treating as a suspect in the attack.
The van entered the pedestrian street from Placa de Catalunya and reportedly zigzagged across the street before crashing into a kiosk on La Rambla.
The protocols for a terror attack have been activated.
People are being evacuated from Las Ramblas area as police have launched a manhunt for a driver of the van according to reports by The El Pais newspaper reported that the driver of the vehicle had fled on foot and that police are still looking for a man about 1.70 metres tall, wearing a white and blue stripped shirt.
Emergency services are urging people to avoid the area and requested the closure of nearby train and metro stations.Ambulances and bomb disposal crews had gathered en masse at the scene.