The Catalan regional police service, Mossos d’Esquadra, have arrested a least 17 people who they believe are linked to a jihadist cell based in and around Barcelona.
Spanish terrorist attacks: Police continue search for driver of van used in Barcelona terror attack, Spain
Spanish terrorist attacks: Police continue search for driver of van used in Barcelona terror attack, Spain
17 suspected Isil supporters arrested in Spanish counter-terror raids
Brussels terror attacks – POLITICO
Spanish police raid Barcelona cell suspected of plotting attack
Spain arrests 11 in operation against Islamists in Catalonia
Catalan police arrest over 17 people during anti-terrorist raid in Barcelona and nearby town
Spaniards, You Are Going to Suffer:” The Inside Story of the August 2017 Attacks in Barcelona and Cambrils – Combating Terrorism Center at West Point
Police detain two Algerians in anti-terrorism operation in Barcelona