The driver of a Spanish train that derailed at high speed killing 78 people was released from hospital on Saturday, but he remained in police custody ahead of an appearance before a judge to answer questions about what went wrong, Reuters reported. Francisco Garzon, 52, was treated for a head injury he sustained in Wednesday's crash. He declined to give a statement to police on Friday. Police had already said Garzon, who has been under arrest since Thursday, was suspected of "recklessness" in driving the train much too fast through a curve on the outskirts of Santiago. Fernandez said he would be questioned by a magistrate by Sunday evening at the latest. Survivors and families of victims from Spain's deadliest train crash in decades were desperate for answers three days after the eight-carriage, high-speed train derailed on a sharp bend, slamming into a concrete wall. Authorities said they had identified the last three bodies, one of whom was a French man. Dozens of others injured were still in hospital in serious condition. Officials are looking into whether the accident was the result of human error or a problem with the train, the track or the security system that controls speed on the railway. The government has said a clearer picture would emerge from two official investigations, one judicial and one governmental, but there was growing pressure for assurances that Spain's rail network was safe. -- SPA 20:43 LOCAL TIME 17:43 GMT تغريد