Spain’s prime minister, Pedro Sánchez, has admitted “trust in high-speed rail has been broken” after Wednesday’s train collision that killed at least 69 people, injured more than 100 and prompted a national debate on the safety of the country’s rail network.

Sánchez said Spain was “working tirelessly” to provide information as quickly as possible to the families of the victims – who include people from at least 23 different foreign countries – adding his government was committed to finding what had caused the country’s second deadly train collision this year.

Two trains, one from Spain’s state-owned Renfe and the other from the private rail company Iryo, were travelling from Madrid towards the southern region of Andalucía on Wednesday when they collided just before 9am .…