The reason for the delay is due to the lawyer's strike currently happening in Greece. Prosecution lawyer Yannis Paradisis told the Guardian: "The case is going to be adjourned. The strike has meant court proceedings cannot take place. We will be given a new date by the judge tomorrow."
A source told The Sun that while officials want a swift resolution, lawyers "can't be seen as strike-breakers". According to the Mail's report, this is the second time the trial has been delayed.