Traces of the easy-to-make but deadly explosive TATP -- known as the "mother of Satan" -- have been found in a house where the alleged attackers in the twin assaults in Spain were believed to be building bombs.
Spanish police confirm that Julian Cadman, a 7-year-old boy with dual Australian/British nationality, was killed in the attack on Las Rambas in Barcelona.
Spanish police said on Sunday that the man suspected of driving the van used in one of the twin attacks that claimed 14 lives could be at large outside Spain.
Mourners wiped back tears at a solemn mass at Barcelona's stunning Sagrada Familia church on Sunday for victims of the deadly vehicle attacks that have devastated Spain.
Police said on Sunday they have found more than 120 gas canisters in a house in Alcanar, where suspects of this week's twin assaults in Spain were believed to be building bombs for "one or more" attacks in Barcelona.
Prayer time is approaching but Raja Miah, an imam at a tiny mosque in the heart of Barcelona does not expect a big turnout.
Barcelona's authorities came under fire Saturday for failing to put up security barriers at the seaside city's main tourist thoroughfare, Las Ramblas, the site of a deadly jihadist attack two days ago.
A Spanish court on Sunday ordered the conditional release of German-Turkish writer Dogan Akhanli a day after police had arrested him at Ankara's request.