The type of train involved in the crash was a Freccia 1000, which can reach top speeds of 400 km/h (250 mph), a spokesperson for the Italian rail company Ferrovie dello Stato told the Reuters news agency.
The Spanish Red Cross has deployed emergency support services to the scene, while also offering counselling to families nearby.
Miguel Ángel Rodríguez from the Red Cross told RNE radio: “The families are going through a situation of great anxiety due to the lack of information. These are very distressing moments.”
