Two young women remain in intensive care after a cable car collapsed at a Spanish ski resort on Saturday, injuring several people.

The Aston resort in the Spanish Pyrenees, where the incident occurred, was closed as rescuers rushed to the scene, but has since reopened.

A pulley failure appeared to have caused slack in the cables, causing some chairs to fall to the ground, plunging skiers into the snow.

Authorities are investigating what went wrong, state media reported. one Resort Statement Emphasizing that it has "all licenses and inspections."

District officials initially estimated about 30 people were injured, but the ski resort later said it estimated about 15 people were injured.

Local emergency services triaged people who fell at the resort. They said 10 people were taken to hospital and 20 others were discharged "on the spot."

Two 18-year-olds in the most serious condition were airlifted by helicopter to a hospital in Zaragoza, Spanish state media reported. One is said to be in stable condition, while the other is still under observation but is improving.

A pulley at one end of the cable car came loose and part of the structure supporting the cable car collapsed, causing the cables to lose tension and causing several seats to fall, state broadcaster TVE reported.

Dozens of people were helped off the 15m high (50ft) chairlift.

Prime Minister Pedro Sanchez said he was "shocked" by news of the incident.

Jaime Pelegri, who was in the lift, told the BBC that a cable lost tension before the chair on his side collapsed.

"It was very scary, but very fast," he said, adding that an ambulance and helicopter were at the scene within 15 minutes.

He earlier wrote in X's post: "Luckily we are okay, but there are injured people and we saw several stretchers being rolled down."

Pictures on social media appeared to show one of the cable car's flywheels detached from its columns.

The president of the autonomous region, Jorge Azcon, and Spanish Interior Minister Roberto Bermudez de Castro went to the scene.

Azcón wrote on: “(Government) All necessary services are working to assist those affected and injured.”

Prime Minister Pedro Sanchez said he had spoken to Azcon and offered the government's "full support."

A telephone hotline has been set up for the families of those affected.

Aston Resort is located in the Aragon region of the Pyrenees, close to the French border, and is popular with Spanish skiers.