Present at the parliamentary session were Serbian President Boris Tadic, Prime Minister Vojislav Kostunica, a majority of ministers, officials from the judiciary and the head of the Serb Orthodox Church, Patriarch Pavle, as well as the leader of the Catholic Church in Serbia, Belgrade Archbishop Stanislav Hocvevar, the head of the Islamic Community in Belgrade, Muhamed Jusufspahic and other religious dignitaries, foreign diplomats and representatives of the Russian Duma.
Deputies of the Serb Radical Party whose chief Vojislav Seselj is accused of war crimes by the ICTY tribunal, were wearing T-shirts with the image of their leader.
The Serbian parliament, however, failed to adopt a constitutional law regulating the implementation of the constitution.
Assembly Speaker Predrag Markovic said a discussion on the matter would resume on Thursday afternoon.
The constitutional law is to define a date for early parliamentary and presidential elections, but political parties have not yet agreed on possible dates.
For the constitutional law to be adopted, it is necessary that two thirds of MPs vote for it.