Serbian General Vladimir Lazarevic is to voluntarily surrender to U.N. authorities to face trial for alleged war crimes, the Serbian government said in a statement Friday. Lazarevic, 55, indicted by the International Criminal Tribunal for the former Yugoslavia (ICTY) as one of the top army operatives during the 1999 war in Kosovo, announced his decision directly to Prime Minister Vojislav Kostunica, the statement said. Kostunica welcomed Lazarevic's move and promised him full support of the state during the trial. He is due to travel to The Hague next week, the statement said. Lazarevic is indicted along with three other army and police generals - Sreten Lukic, Nebojsa Pavkovic and Vlastimir Djordjevic. Serbia has been under considerable international pressure to arrest all indicted war crime suspects and hand them over to The Hague-based tribunal. That includes the arrest and delivery of the Bosnian Serb General Ratko Mladic - wanted for atrocities such as the massacre of thousands of Moslems in Srebrenica in 1995 - who is believed to be hiding in Serbia.