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Driver in Argentine train crash under scrutiny: Officials

 An injured man is evacuated after a commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
 An injured man is evacuated after a commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
Police and paramedics carry a wounded passenger to an ambulance after a commuter train slammed into the end of the line when arriving to Once Central station in Buenos Aires, Argentina, early on Saturday, Oct. 19, 2013. -- PHOTO: AP 
Police and paramedics carry a wounded passenger to an ambulance after a commuter train slammed into the end of the line when arriving to Once Central station in Buenos Aires, Argentina, early on Saturday, Oct. 19, 2013. -- PHOTO: AP 
Picture released by NA showing the commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
Picture released by NA showing the commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
Picture released by NA showing a firefighter inspecting the commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
Picture released by NA showing a firefighter inspecting the commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
Firefighters inspect a commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
Firefighters inspect a commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. -- PHOTO: AFP
A police helicopter for emergency medical services is seen outside the Once railway terminal in Buenos Aires after a commuter train apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
A police helicopter for emergency medical services is seen outside the Once railway terminal in Buenos Aires after a commuter train apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
Police officers are seen at the Once railway terminal in Buenos Aires after a commuter train apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
Police officers are seen at the Once railway terminal in Buenos Aires after a commuter train apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
Police officers are seen at the Once railway terminal in Buenos Aires after a commuter train apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
Police officers are seen at the Once railway terminal in Buenos Aires after a commuter train apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
Rescue workers (in orange suit) are seen at the Once railway terminal in Buenos Aires after a commuter train (2-R) apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
Rescue workers (in orange suit) are seen at the Once railway terminal in Buenos Aires after a commuter train (2-R) apparently failed to stop and crashed at the end of the line, on Oct 19, 2013. -- PHOTO: AFP
 Police officers block access to Once Train station after a commuter train slammed into the end of the line when arriving to the station early this morning in Buenos Aires, Argentina, on Saturday, Oct. 19, 2013. -- PHOTO: AP
 Police officers block access to Once Train station after a commuter train slammed into the end of the line when arriving to the station early this morning in Buenos Aires, Argentina, on Saturday, Oct. 19, 2013. -- PHOTO: AP
Argentinian Transport Minister Florencio Randazzo delivers a spress conference in Buenos Aires on Oct 19, 2013, after a train failed to stop and crashed at the end of the line at the Once railway terminal. -- PHOTO: AFP
Argentinian Transport Minister Florencio Randazzo delivers a spress conference in Buenos Aires on Oct 19, 2013, after a train failed to stop and crashed at the end of the line at the Once railway terminal. -- PHOTO: AFP
Picture released by NA shows firefighters inspecting the commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. Argentine authorities said on Sunday they are inv
Picture released by NA shows firefighters inspecting the commuter train that apparently failed to stop and crashed at the end of the line at the Once railway terminal in Buenos Aires, on Oct 19, 2013. Argentine authorities said on Sunday they are investigating the driver of a train that crashed and injured at least 99 people a day earlier. -- PHOTO: AFP 

BUENOS AIRES (AFP) - Argentine authorities said on Sunday they are investigating the driver of a train that crashed and injured at least 99 people a day earlier.

The government said investigators found a hard disk containing the surveillance camera recording from the conductor's cab in conductor Julio Benitez' backpack.

The cameras were installed after a deadly collision in June, when a speeding commuter train slammed into another train that had stopped between stations, killing three people and injuring more than 300.

Benitez, 45, was among those injured when the train apparently failed to stop at the end of the line at the Once station in Buenos Aires Saturday morning.

He remains in the hospital, in police custody, but health authorities said his injuries were not serious.

The train control unit reported the train was running "at a speed greater than average" in the 600m before it crashed at the platform, according to an official report.

"The driver never indicated (mechanical) failure to the control tower," it added, though they noted a blood alcohol test came in negative.

Officials had said they could not immediately determine the cause of the accident, but at least one witness reported that the train appeared to have trouble braking at two previous stops.

Benitez was highly experienced, according to his union, which accused the government of blaming workers for problems with the rail system.

Buenos Aires has been plagued by rail accidents in recent years.

After surveillance cameras were installed in the drivers' cabs, drivers were caught on video nodding off, on the phone or reading, sometimes with their hands off the controls altogether, transport officials.

In addition to the incident in June, 51 people died and 700 were injured in February 2012, when a train slammed into a retaining wall at Once station.

After the June crash, worn out, decades-old cars were supposed to be replaced with shiny new Chinese-made ones.