There has just been a massive trampling on the Ramblas in Barcelona by a person with a van. There are injured
— Mossos (@mossos) August 17, 2017
La meva més rotunda condemna a l'atemptat terrorista de Barcelona. Podem confirmar 13 morts i més de 50 ferits. @mossos @solercampins pic.twitter.com/va0IlQejb0
— Joaquim Forn (@quimforn) August 17, 2017
18:08 Dispositivo de búsqueda del autor del atropello masivo en marcha. No se acerquen a la zona afectada
— Mossos (@mossos) August 17, 2017
The claim that the incident was a terrorist attack come from police at the scene, according to AFP:
“Police in Barcelona, Spain’s second-largest city, told crowds fleeing the scene by megaphone that they were dealing with a ‘terrorist attack’.”
🚩Por respeto a las víctimas y a sus familias, por favor, NO compartas imágenes de heridos en atropello de #Ramblas de Barcelona
— Policía Nacional (@policia) August 17, 2017
Esta es la furgoneta utilizada en el atropello múltiple. El conductor ha huido a pie.
— Xavier Aldekoa (@xavieraldekoa) August 17, 2017
La foto la he recortado porque se veía una víctima. pic.twitter.com/oG8Q7WHSEe
El Periodico reports that the alleged perpetrators are inside a restaurant, and that they have at least one long weapon.
Citing police sources, the newspaper says 20-25 people have been injured and that some may have died.