 Some of the most important attacks have been a bomb explosion inside a cafeteria on September 13, 1974, which killed 13 people, a triple bomb attack on July 29, 1979, that killed 7 people, a car bomb explosion on July 15, 1986, which killed 12 Civil Guards, as well as two car bombs that killed seven and six army members in 1993 and 1995, respectively.The Madrid–Barajas airport had also been the location of ETA attacks on July 29, 1979, when three civilians were killed, and on August 27, 2002, when a car bomb exploded on the second floor of the Terminal 2 parking, causing only material damage, after a warning call from the armed organisation.In two meetings held at the Baztan valley in Navarre in the summer of 2006, Txeroki, then head of commandos, ordered fellow ETA members Mattin Sarasola, Igor Portu and Mikel San Sebastián to carry out the bombing.