Relatives of the 57 people who died in Greece's worst ever train disaster crowded into a courtroom on Wednesday, demanding justice for the victims. The trial had already been postponed once because of the chaotic start last week. Most of the victims of the crash three years ago were students, killed when their intercity service from Athens to Thessaloniki smashed head-on into a goods train on the same line near Tempi in the centre of the country. Some of the victims are thought to have burnt to death after surviving the initial collision. Many relatives were unable to get into the courtroom in the central town of Larisa last week, and the situation was little different when it resumed on Wednesday. Police officers allowed in only participants who were legally scheduled to attend. Some relatives complained that two rows of seats had been taken up by police, while others said they still could not witness proceedings clearly enough. Defence lawyer Zoe Konstantopoulou appealed for the proceedings to be filmed as access for families had been restricted. The February 2023 disaster is widely known in Greece as the Tempi crime - with many arguing it encapsulates negligence and corruption at the heart of the state. Thirty-six people are on trial in a case that is expected to hear from 350 witnesses and is set to last years. Thirty-three of the defendants face up to life in prison if convicted, among them a station master who failed - along with everyone else - to spot that the two trains had been travelling towards each other on the same line for 10 minutes. The trial has provoked widespread anger and protest across Greece, as the railway network had not made use of EU funding intended to improve safety. This disaster has raised serious concerns regarding governmental accountability and safety protocols in the railway sector.