In 2002 the Prestige oil spill occurred with big ecological consequences along Spain's Atlantic coastline. In 2003 José María Aznar supported US president George W. Bush in the Iraq War, and a strong movement against war rose in Spanish society. On 11 March 2004 a local Islamist terrorist group inspired by Al-Qaeda carried out the largest terrorist attack in Spanish history when they killed 191 people and wounded more than 1,800 others by bombing commuter trains in Madrid. Though initial suspicions focused on the Basque terrorist group ETA, evidence soon emerged indicating Islamist involvement. Because of the proximity of the 2004 election, the issue of responsibility quickly became a political controversy, with the main competing parties PP and PSOE exchanging accusations over the handling of the incident. The elections on 14 March were won by the PSOE, led by José Luis Rodríguez Zapatero.