Madrid ( CNN ) -- The judge investigating the train crash that killed 79 people last July is expanding the preliminary charges to include numerous top officials of the state railway infrastructure company , Adif , for alleged negligence , a Tuesday court order shows . Judge Luis Alaez Legeren wrote that five Adif officials in charge of track and signal security , along with the current and two former Adif presidents , will face preliminary charges because there was no safety system that would have compensated for any human error by the train driver . The prime suspect remains the driver , Francisco Jose Garzon , who already faces preliminary charges of 79 counts of homicide by professional recklessness . The judge 's latest order states that the passenger train was going more than twice the speed limit when it derailed on a curve near the northwest city of Santiago de Compostela . In addition to 79 fatalities , some 170 passengers were injured . Just before the crash , the driver took a phone call from another official on the train to discuss the train 's route farther north on the journey , the judge wrote . An Adif spokeswoman said the company had no immediate comment about the judge 's order , and company lawyers were studying it . In the eight-page order sent by the court to reporters , the judge cites various security systems in place along the section of track where the accident occurred . But he adds it appears that Adif officials did not adequately mitigate all the predictable scenarios of human error by the driver . Since the accident , the speed limit at the curve has been reduced from 80 kilometers per hour ( 50 mph ) to just 30 , Adif has confirmed . Last week , Spanish newspaper El Pais exclusively obtained audio of the driver 's first , desperate phone call , while injured and still trapped inside the engine , to the train 's control center . The court said it did not release the audio , but there are several parties to the case who may have had access to it . In the audio , the driver told his control center he `` got distracted '' and was going 190 kilometers an hour when he should have been doing 80 . News media reported that part of the conversation in the days after the crash , citing officials , who blamed excessive speed for the crash . But the audio recording also contains allegations by the driver that were not widely reported weeks ago , namely his contention that he had warned authorities about what he called the dangerous curve . `` I had already told security it was dangerous , that one day we were going to eat it , and it happened to me , '' the driver , Garzon , is heard telling the control center in the audio recording . A few moments later he added , `` Oh God , I had already told the people from security that it was very dangerous . We are human ... and this can happen ... that this curve is inhumane . Understand ? If there was a warning light ... '' For weeks , the judge has been investigating other potential causes for the accident , beyond the train 's excessive speed . In the court order Tuesday , he also asked Adif to provide the names of all company board members and all rail security senior officials , since December 2011 . That 's when the section of track where the accident occurred , and its security systems , went into operation .
Preliminary charges in the Spain train crash case now include top government officials . Judge Luis de Legeren is adding the charges because the train lacked a safety system . He notes there were systems in place at various stations , but driver safety was not anticipated . The crash took the lives of 79 people and injured some 170 .