Former Serbian paramilitary police general Sreten Lukic has denied charges of war crimes and crimes against humanity during the Kosovo war.
Charges against Sreten Lukic include murder and persecution
Gen Lukic surrendered to the UN war crimes tribunal last month.
Two other former Serb generals are already being held at The Hague on charges relating to Serbia's campaign in Kosovo in 1998 and 1999.
Serbia has increased co-operation with the tribunal to satisfy the EU that it is ready for talks on closer ties.
Gen Lukic's co-accused are Gen Nebojsa Pavkovic and Vladimir Lazarevic, who have already surrendered to the UN war crimes tribunal, and Vlastimir Djordjevic - who is believed to be hiding in Russia.
The charges against the generals relate to attempts to force the ethnic Albanian majority out of Kosovo.
Thousands of ethnic Albanians were killed there during the crackdown by the Serbian security forces.
Gen Lukic, 50, who was chief of staff for Kosovo at the Serbian interior ministry at the time, faces four charges of crimes against humanity and one of war crimes.