BELGRADE (AFP) - Serbia on Wednesday arrested Goran Hadzic, the one-time Croatian Serb rebel leader accused of overseeing mass murder and the last remaining fugitive wanted by the UN war crimes court in The Hague. Hadzic, 52, faces 14 counts of crimes against humanity and war crimes for the murder of hundreds of civilians and the deportation of tens of thousands of Croats by troops under his command during the 1991-95 Croatian war. The European Union hailed the arrest as an "important" step forward in Serbia's bid for EU membership while Serbian President Boris Tadic said it was the end of a "difficult" chapter in Belgrade's dealings with The Hague court. The United States said his arrest was a "milestone for the UN war crimes tribunal for the former Yugoslavia and an opportunity for justice". Within hours of the arrest, a pale Hadzic was brought before Serbia's national war crimes court in Belgrade, which ruled he could be extradited to The Hague. His lawyer, Toma Fila, said he would not lodge an appeal and that Hadzic could be transferred within the next few days. "I will not lodge an appeal. He has been allowed to receive family visits tomorrow (Thursday) and the day after. After that, as far as I'm concerned, he can leave for The Hague," Fila told journalists outside the court. The final order for transfer will have to be signed by Serbia's justice minister before Hadzic can be put on a plane. Sources present at the hearing told AFP that he could be transferred by Saturday. Hadzic's arrest comes less than two months after Serbian authorities finally captured wartime Bosnian Serb commander Ratko Mladic, the UN court's most wanted fugitive. Hadzic, who had been on the run since his indictment in 2004, appeared haggard and heavier during his brief court appearance in Belgrade Wednesday and bore little resemblance to the dark-haired bearded man in his wanted poster. He is wanted for the massacre by Croatian Serb troops under his command of 250 Croats and other non-Serbs taken from a hospital in Vukovar after the city fell to Serbian troops following a three-month siege in November 1991. "At the time Hadzic was the master of life and death who decided the fate of numerous prisoners in Vukovar," Zdravko Komsic, the head of an organisation of former Vukovar prisoners of war, told Croatian media. The siege of Vukovar and the subsequent massacre is one of the darkest chapters of the wars in the former Yugoslavia. The prosecutor of the The Hague-based International Criminal Tribunal for the former Yugoslavia (ICTY), Serge Brammertz, called the arrest "an important milestone in the tribunal's history".