Tens of thousands of protesters have rallied outside Greek parliament in Athens to demand justice for the victims of the country’s worst railway disaster nearly two years ago.

The demonstration, one of the biggest to be held in the capital in recent years, came days after local media released an audio recording suggesting that some of the fifty-seven victims might have survived the collision but died in a fire of yet unknown origin that burned for more than an hour following the crash.

Protests were also held in dozens of other cities in Greece and abroad, with participants rallying under the “I have no oxygen” slogan, which echoed a woman’s last words in a call to emergency services.