- Train driver Francisco Jose Garzon 'formally detained' by Spanish police
- The passenger train derailed outside city of Santiago de Compostela
- All eight carriages of the Madrid to Ferrol train derailed
- The train was carrying 218 passengers when it smashed into the wall
- Many were travelling to the area on the eve of a Christian festival
- Foreign Office confirmed a British citizen is among the injured
- Driver posted picture of train speedometer at 125mph in March last year
- Spanish PM has visited scene and declared three days official mourning
The black box of the Spanish train which crashed killing at least 80 people recorded its driver begging controllers what to do in the moments after it hurtled off the tracks, yelling: 'I f***** up. I want to die.'
Francisco Jose Garzon, who was today 'formally detained' by Spanish police investigating the incident, was behind the controls when the Madrid to Ferrol high-speed rail link hurtled into a wall at 120mph near the city of Santiago de Compostela on Wednesday night.
The on-board recording device reveals Garzon's desperate pleas to the Alvia Trains control room as the magnitude of the smash dawned on him, Spanish newspaper El Mundo reported.
'I've derailed,' he told the rail company's nerve centre as the dust settled around the wreckage. 'What do I do? What am I supposed to do? I f***** up. I want to die.'