ADAMUZ, Spain (AP) — Spanish police said Monday that at least 39 people are confirmed dead in a high-speed rail collision the previous night in the south of the country when the tail end of a train jumped the track, causing another train speeding past in the opposite direction to derail.

The impact tossed the second train's lead carriages off the track, sending them plummeting down a 4-meter (13-foot) slope. Some bodies were found hundreds of meters (feet) from the crash site, Andalusia regional president Juanma Moreno said, describing the wreckage a “mass of twisted metal" with bodies likely still to be found inside.

Efforts to recover the bodies continued Monday, and the death toll could rise. Authorities are also focusing on attending hundreds of distraught family members and have asked for them to provide DNA samples to help identify victims.

The crash occurred Sunday at 7:45 p.m. when the tail end of a train carrying 289 passengers on the route from Malaga to the capital, Madrid, went off the rails. It slammed into an incoming train traveling from Madrid to Huelva, another southern Spanish city, according to rail operator Adif.

The head of the second train, which was carrying nearly 200 passengers, took the brunt of the impact, Spanish Transport Minister Óscar Puente said. That collision knocked its first two carriages off the track. Puente said that it appeared the largest number of the deaths occurred in those carriages.

Authorities said all the survivors had been rescued in the early morning.

Three days of mourning for a nation in shock

The accident shook a nation which leads Europe in high-speed train mileage and takes pride in a network that is considered at the cutting edge of rail transport.

Spanish Prime Minister Pedro Sánchez declared three days of national mourning for the victims of the crash.

“Today is a day of pain for all of Spain,” Sánchez said on a visit to Adamuz, a village near the accident site, where many locals helped emergency services handle the influx of distraught and hurt passengers overnight.

Twisted metal after a violent impact

Moreno, the regional leader, said Monday morning that emergency services were still searching for bodies.

“Here at ground zero, when you look at this mass of twisted iron, you see the violence of the impact,” Moreno said. “The impact was so incredibly violent that we have found bodies hundreds of meters away.”

Video released by the Civil Guard showed the worst-hit carriages shredded open, train seats cast on the gravel packing under the tracks. One carriage lay on its side, bent around a large concrete pillar, with debris scattered around the area.

Passengers reported climbing out of smashed windows, with some using emergency hammers to break the glass.

Andalusia’s regional emergency services said 43 people remained hospitalized, 12 of whom were in intensive care units. Another 79 passengers were discharged by Monday afternoon, authorities said.

Train services Monday between Madrid and cities in Andalusia were canceled, causing large disruptions. Spanish airline Iberia added flights to Seville and another two to Malaga to help stranded travelers. Some bus companies also reinforced their services in the south.

Officials call accident ‘strange’

Transport Minister Puente early Monday said the cause of the crash was unknown.

He called it “a truly strange” incident because it happened on a flat stretch of track that had been renovated in May. He also said the train that jumped the track was less than 4 years old. That train belonged to the Italian-owned company Iryo, while the second train was part of Spain’s public train company, Renfe.

According to Puente, the back part of the first train derailed and crashed into the head of the other train. An investigation into the cause could take a month, he said.

Álvaro Fernández, the president of Renfe, told Spanish public radio RNE that both trains were well under the speed limit of 250 kph (155 mph); one was going 205 kph (127 mph), the other 210 kph (130 mph). He also said that “human error could be ruled out.”

The incident “must be related to the moving equipment of Iryo or the infrastructure,” he said.

Iryo issued a statement on Monday saying that its train was manufactured in 2022 and passed its latest safety check on Jan. 15.

Identifying the victims

Various Spaniards who had loved ones on the trains posted messages on social media saying they were unaccounted for and pleading for any information.

The Civil Guard opened an office in Cordoba, the nearest city to the crash, as well as Madrid, Malaga, Huelva and Seville for family members of the missing to seek help and leave DNA samples.

“There were moments when we had to remove the dead to get to the living,” Francisco Carmona, firefighter chief of Cordoba, told Onda Cero radio.

A sports center in Adamuz, a town in the province of Cordoba, about 370 kilometers (about 230 miles) south of Madrid, was turned into a makeshift hospital. The Spanish Red Cross set up a help center offering assistance to emergency services and people seeking information.

“The scene was horrific. It was terrible,” Adamuz mayor Rafael Moreno told The Associated Press and other reporters. “People asking and begging for help. Those leaving the wreckage. Images that will always stay in my mind.”

One passenger had been treated in a local hospital along with her sister before she returned to Adamuz with hopes of finding her lost dog. She was limping and had a small bandage on her cheek, as seen by an AP reporter.

Expressions of grief from prominent figures

Pope Leo XIV expressed his condolences for the dead and hope for the quick recovery of the injured, the Vatican said in a statement.

European Commission President Ursula von der Leyen also said she was following the “terrible news.”

Spanish King Felipe VI expressed his condolences Monday, adding that the royal house was looking into a visit to Adamuz.

“I understand the desperation of the families and the number of injured people who have suffered this accident, and we are all really worried,” the king said, speaking from Athens.

The Spanish flag was flown at half-staff in front of Parliament in Madrid for the victims on Monday.

First deadly accident for Spain's high-speed trains

Spain has spent decades investing heavily in high-speed trains and currently has the largest rail network in Europe for trains moving over 250 kph (155 mph), with more than 3,100 kilometers (1,900 miles) of track, according to the European Union.

The network is a popular, competitively priced and safe mode of transport. Renfe said more than 25 million passengers took one of its high-speed trains in 2024.

Iryo became the first private competitor in high-speed to Renfe in Spain in 2022.

Sunday's accident was the first with deaths on a high-speed train since Spain's high-speed rail network opened its first line in 1992.

Spain’s worst train accident this century occurred in 2013, when 80 people died after a train derailed in the country’s northwest. An investigation concluded the train was traveling 179 kph (111 mph) on a stretch with an 80 kph (50 mph) speed limit when it left the tracks. That stretch of track was not high speed.

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Wilson reported from Barcelona, Spain, and Naishadham from Madrid. Video-journalist Alicia León in Adamuz and AP journalist Barry Hatton in Lisbon, Portugal, contributed.