SANTIAGO DE COMPOSTELA, Spain (WVLT/CBS) -- A Spanish train that hurtled off the rails and smashed into a security wall as it rounded a bend was going so fast that carriages tumbled off the tracks like dominos, killing 80 people, according to eyewitness accounts and video footage obtained Thursday.
A State Department official confirmed to CBS News Thursday morning that five Americans were injured in the crash. The department has not received any reports of U.S. citizen deaths, according to the official.
One American survivor has sent a message from a hospital saying he's OK, CBS News correspondent Mark Phillips reported on "CBS This Morning" Thursday.
The train seemed to be traveling, the driver who survived said, about twice the speed that it should have been, Phillips reported. It should have been traveling about 50 miles per hour. It was traveling about 100 mph.
An Associated Press analysis of video images suggests that the train may have been traveling at twice the speed limit for that stretch of track.
Spain's government said two probes have been launched into the cause of Wednesday night's crash near this Christian festival city in northwest Spain. The Interior Ministry raised the death toll to 80 in what was Spain's deadliest train wreck in four decades, while 95 remained hospitalized, 36 in critical condition, among them four children.
The cause of the crash seems to have been a deadly combination of high speed and low budgets, Phillips reports. In order to save money when updating the line between Madrid and the northwest coastal town of El Ferrol, the Spanish rail authority opted to use the existing right of way through Santiago de Compostela.
New, fast trains were supposed to slow down to 50 miles an hour on the tight curve, Phillips reports.
Prime Minister Mariano Rajoy, a native of Santiago de Compostela, toured the crash scene alongside rescue workers and went to a nearby hospital to visit those wounded and their families.
"For a native of Santiago, like me, this is the saddest day," said Rajoy, who declared Spain would observe a three-day period of mourning. He said judicial authorities and the Public Works Ministry had launched parallel investigations into what caused the crash.
Eyewitness accounts backed by security-camera footage of the moment of disaster suggested that the eight-carriage train was going too fast as it tried to turn left underneath a road bridge. The train company Renfe said 218 passengers and five crew members were on board. Spanish officials said the speed limit on that section of track is 50 miles per hour.
An Associated Press estimate of the train's speed at the moment of impact using the time stamp of the video and the estimated distance between two pylons gives a range of 89-119 mph. Another estimate calculated on the basis of the typical distance between railroad ties gives a range of 96-112 mph.
The video footage, which the Spanish railway authority Adif said probably came from one of its cameras, shows the train carriages start to buckle soon into the turn.
Murray Hughes, consultant editor of Railway Gazette International, said it appeared that a diesel-powered unit behind the lead locomotive was the first to derail. The front engine itself quickly followed, violently tipping on to its right side as it crashes into a concrete security wall and bulldozes along the ground.
In the background, all the rear carriages can be seen starting to decouple and come off the tracks. The picture goes blank as the engine appears to crash directly into the camera.
After impact, witnesses said a fire which engulfed passengers trapped in at least one carriage most likely from the diesel fuel carried in the locomotive units.
"I saw the train coming out of the bend at great speed and then there was a big noise," one eyewitness who lives beside the train line, Consuelo Domingues, told The Associated Press. "... Then everybody tried to get out of the train."
Santiago officials had been preparing for the city's internationally celebrated Catholic festival Thursday but canceled it and took control of the city's main indoor sports arena to use as a makeshift morgue. There, relatives of the dead could be seen sobbing and embracing each other.
The Interior Ministry, responsible for law and order, ruled out terrorism as a cause.
It was Spain's deadliest train accident since 1972, when a train collided with a bus in southwest Spain, killing 86 people and injuring 112.
"July 24 will no longer be the eve of a day of celebration but rather one commemorating one of the saddest days in the history of Galicia," said Alberto Nunez Feijoo, regional president of Galicia. Santiago de Compostela is its capital.
The accident created a scene that was "Dante-esque," Feijoo said. He said Galicia would observe seven days of mourning.
Rescue workers spent the night searching through smashed carriages alongside the tracks.
As dawn broke, cranes brought to the scene were used to lift the carriages away from the tracks. Rescue workers collected passengers' scattered luggage and loaded it into a truck next to the tracks.
Rescuers described a scene of horror immediately after the crash. Smoke billowed from at least one carriage that had caught fire, while another had been torn into two parts.
Residents of the residential neighborhood closest to the rail line struggled to help victims out of the toppled cars. Some passengers were pulled out of broken windows. Television images showed one man atop a carriage lying on its side, using a pickaxe to try to smash through a window. Other rescuers used rocks to try to free survivors from the fiery wreckage.
Nearby, rescue workers lined up bodies covered in blankets alongside the tracks.
State-owned train operator Renfe said the crash happened at 8:41 p.m. (2:41 p.m. ET) about 2.5 miles south of Santiago de Compostela.
Spanish media said the train had two drivers aboard and both survived.
However, Galician court officials said the train had only one driver. Court spokeswoman Maria Pardo Rios said the driver survived and was expected to give a statement to police later Thursday. She declined to name the driver but said he was not being treated as the suspect of a crime.
Renfe said it and Adif, another state-owned company that manages tracks, signals and other railway infrastructure, were cooperating with a judge appointed to investigate the accident.
Catholic pilgrims converge on Santiago de Compostela annually to celebrate a festival honoring St. James, a disciple of Jesus whose remains are said to rest in a shrine. The city is the main gathering point for those who reach the end of the El Camino de Santiago pilgrimage route that has drawn Christians since the Middle Ages.
Several injured passengers said they felt a strong vibration just before the cars jumped the tracks, according to Xabier Martinez, a photographer who talked with them after arriving at the scene as rescue workers were still removing bodies.
One passenger, Ricardo Montero, told the Cadena Ser radio station that "when the train reached that bend it began to flip over, many times, with some carriages ending up on top of others, leaving many people trapped below. We had to get under the carriages to get out."
Another passenger, Sergio Prego, told Cadena Ser the train "traveled very fast" just before it derailed and the cars flipped upside down, on their sides and into the air.
"I've been very lucky because I'm one of the few able to walk out," Prego said.
The Alvia 730 series train started from Madrid and was scheduled to end its journey at El Ferrol, about 95 kilometers (60 miles) north of Santiago de Compostela. Alvias operate high-speed services but do not go as fast as Spain's fastest bullet trains, called AVEs.
The maximum Alvia speed is 250 kph (155 mph) on tracks made especially for the AVEs, and they travel at a maximum speed of 220 kph (137 mph) on normal gauge rails.
Other major train crashes in Spain include a 1944 accident involving three trains that crashed in a tunnel. That disaster produced wildly disputed death tolls ranging from the government's official count of 78 to more than 500, according to later research.
In 2006, 43 people died when a subway train crashed because of excessive speed in the southern city of Valencia. In 2004, 191 died when al Qaeda-inspired terrorists detonated 10 bombs on four Madrid commuter trains.
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