Two alleged ETA members arrested over the weekend carried out the deadly bombing in which the Basque separatist group ended a cease-fire in December 2006, the Spanish interior minister said Wednesday. The minister, Alfredo Perez Rubalcaba, said Igor Portu and Martin Sarasola, arrested Sunday in the Basque region, carried out the bombing, along with another ETA suspect who remains on the run. The massive truck bombing on December 30, 2006, at Terminal 4 of Madrid airport destroyed a multi-story parking garage and killed two Ecuadoran immigrants who were sleeping in cars inside the building. In March 2006, ETA had declared what it called a permanent cease-fire in its decades-old battle for Basque independence. But it grew frustrated with a lack of government concessions in ensuing peace talks. After the airport bombing, it insisted the deaths were unintended and that the truce still held. But it declared the cease-fire formally over in June 2007 and reverted to violence.