The attacks, consisting of coordinated bombings in Barajas Airport and the train stations of Atocha and Chamartín, killed 7 people and injured a further 100.
[1] The bomb consisted of 6 kilos of Amatol and exploded at 13:01, destroying nearby shops, toilets and windows.
[1] Broken glass from the windows led to numerous injuries, among them a soldier and a member of the Guardia Civil.
The explosion occurred at 13:10 and created panic, with many fleeing from the building towards exits, only to return a few minutes later when the realised that they had abandoned their luggage.
[1] The most serious attack occurred at Atocha at 13:15 with 3 instantly killed and 40 wounded due to the structure of the lockers in which the bomb had been placed.