5 terrorists wearing fake bomb belts have been shot dead by police after a second vehicle attack close to Barcelona.
7 people were injured in the attack, which took place overnight in the town of Cambrils, about an hour away from the Catalan capital.
A woman who was among the 7 died from her injuries this morning.
A third person has been arrested in connection with the attack, which killed 13 people and injured 100 others.
The two attacks are now being linked with an explosion at a house in the town of Alcanar which left one person dead.
Police say residents may have been preparing an explosive device.
Here, tributes have been paid to those killed in the attacks.
President Michael D Higgins said it was with great sadness that he learned of the loss of life:
"I want to send the people of Barcelona not only our sympathy but also the solidarity of the people of Ireland.” https://t.co/cElQZ8OR8B
— President of Ireland (@PresidentIRL) August 17, 2017
While Taoiseach Leo Varadkar described the attack as 'callous'.
The Govt & people of Ireland stand with the people of Barcelona at this time of immense grief. We offer our sympathy, solidarity & support.
— Leo Varadkar (@campaignforleo) August 17, 2017
The Department of Foreign Affairs says it's monitoring developments in Barcelona closely, and anyone with concerns about relatives and friends are being asked to get in touch with their Consular Assistance team by calling 01 408 2000, or with the Irish Embassy in Madrid on +34 914 364 093.