The defence filed a motion for delaying the trial for four to five weeks in order to get extra time to prepare their case.
Presiding judge Carmel Agius said at today's hearing that he would have to think about when the trial would start.
Mile Mrksic, Veselin Sljivancanin and Miroslav Radic, also known as the Vukovar Three, are charged with involvement in a joint criminal enterprise the purpose of which was to expel Croats and other non-Serbs from the eastern Croatian town of Vukovar.
According to the amended indictment of 9 February 2004, on 20 November 1991 JNA soldiers took about 400 non-Serbs from the Vukovar hospital to JNA barracks where they were subjected to abuse by Serb paramilitary forces. The prisoners were then transported to the Ovcara farm outside the town where they were beaten for hours and divided into groups of 10 to 20 for execution.
At least 264 Croats and other non-Serbs taken from the Vukovar hospital were shot dead or otherwise killed at a ditch near the Ovcara farm. Their bodies were bulldozed into a mass grave on the same site.