Pedro Sanchez said the 'terrible tragedy' would be investigated and pledged to address any failures that came to light. (EPA Images pic)MADRID: Spanish prime minister Pedro Sanchez had hoped to ride a wave of public anger over the eviction of an octogenarian, who later died, to win reelection in a snap election, but Wednesday's deadly train crash has dealt a serious blow to his campaign.

The accident in Toledo province killed 68 people and came just nine months after another deadly crash on the same line, leading to accusations from experts and the public of underinvestment in railway infrastructure under Sanchez's government after years of rapid network expansion.

"If we were scared of taking trains before, now we're even more so ... Just when you think nothing else could possibly go wrong, something new happens. There needs to be major change," Oscar, a 24-year-old who declined to give his last name, said at Madrid's Atocha station on Wednesday.