Óscar Abril Alegre had boarded the train to go to the National Institute of Physical Education where he was a student. He was hoping to follow in his father’s footsteps and become a PE teacher. For nine months he had been dating a girl called Jana who was studying the same course as him and with whom he had shared interests. They travelled to the university together each day. They were travelling on the train that was blown up alongside Calle Téllez. The young woman later recounted how she came to on the floor of the carriage and saw Oscar lying motionless.
11 March 2004 fell on a Thursday. Early that morning, a number of terrorists with links to Al-Qaeda planted thirteen bombs on four suburban trains covering routes running through Madrid. Ten of the bombs exploded between 7.37 and 7.39 am, when the trains were at Atocha, El Pozo and Santa Eugenia stations and alongside Calle Téllez. 191 people were killed in the attack and around 1,500 were wounded. It was the deadliest terrorist attack in Spanish history. On 3 April 2004, agents from the Special Operations Group (GEO) were about to enter an apartment in Leganés where the perpetrators of the attacks were believed to be hiding when the terrorists detonated twenty kilograms of explosives in an act of collective suicide. The ensuing blast killed one of the officers, bringing the total number of people killed by the 11 March bombers to 192.