tag:bbc.co.uk,2008:cps:playlist:mediaAsset:14666717 2004: Madrid train attacks On 11 March 2004, a series of bombs exploded within minutes of each other on four commuter trains in the Spanish capital Madrid. 2011-08-25T11:43:44Z en News 14666717 99123 blocked tag:bbc.co.uk,2008:cps:mediaAsset:14666717 This video contains some graphic images