Authorities in Spain believe that the terrorist cell responsible for last week’s vehicle attacks in the country’s Catalonia region was planning a much larger and more deadly attack. That conclusion followed the discovery of a bomb factory operated by the group, including a cache of more than 120 gas canisters and other bomb-making materials. Whatever target or targets the cell was planning to bomb, however, the terrorists’ plans were thwarted when their bomb cache exploded prematurely on Wednesday, destroying a house in the Spanish beach town of Alcanar. A manhunt is still under way for one of the suspects, but it seems that the other members of the cell have either been killed or apprehended…

Spanish authorities say the terrorist cell comprised 12 mostly young men of Moroccan origin, some of whom were teenagers. None of the men had any known links to Islamic extremist groups, but the cell seems to have been planning attacks for at least the last six months. Four of the suspected terrorists have been arrested, and another two are missing, but were probably killed in the house explosion in Alcanar. Two bodies were recovered from that blast, but have yet to be identified.