Spain terror cell had 120 gas canisters, planned 'one or more' attack

Spanish police said on Sunday they have found more than 120 gas canisters in a house in Alcanar, where suspects of last week’s twin assaults in Spain were believed to be building bombs for "one or more" attacks in Barcelona.

Catalan police chief Josep Lluis Trapero said the cell was still believed to consist of 12 men and had been planning attacks for more than six months. One person remained at large, four were under arrest and there were two sets of human remains to be identified, he added.

"We're starting to see clearly that (the Alcanar house) was the place where they were preparing explosives for one or more attacks in the city of Barcelona," Trapero told journalists.

Police are still hunting for the driver of the van that hit dozens of people on Barcelona's Las Ramblas, killing 13. Trapero added that police knew his identity but would not reveal it.

In addition to the 13 killed on Thursday afternoon on Las Ramblas, a woman died in a second vehicle attack early on Friday in the town of Cambrils. Five suspected jihadists were shot dead by police in the second attack.

On Sunday, a Mass was held in Barcelona to mourn the victims.