http://www.telegraphindia.com/1040313/images/13madrid.jpg The World Trade Center effect All angles under Spain scanner
A students painted hand with the ribbon of mourning during a demonstration in central Oviedo on Friday against the explosions in Madrid. (Reuters)
Madrid, March 12: Spain vowed today to follow every lead to hunt down the Madrid train bombers as all Europe waited on edge for word of whether Basque or Muslim militants were behind the bloodiest guerrilla attack on a European city.
But fears that Islamists linked to al Qaida might have had a hand in the coordinated blitz put security forces on alert across the continent and beyond.
No line of investigation will be ruled out, Spanish Prime Minister Jose Maria Aznar said minutes before mourning Spaniards fell silent across the nation to honour the nearly 200 dead.
Washington said a letter claiming responsibility for al Qaida and threatening another September 11-style strike could be the precursor of another plot against America.