Serbian Prime Minister Zoran Djindjic - a key leader of the revolt that toppled former President Slobodan Milosevic  in October 2000 - was assassinated Wednesday by gunmen who ambushed him outside the government complex, police sources said. Djindjic died of his wounds in a Belgrade hospital after having been shot in the abdomen and back, the sources told The Associated Press. Police arrested two suspects.

The government building where Djindjic was ambushed was sealed off by heavy state security, and three ambulances were parked in front. Police stopped traffic in downtown Belgrade, searching through cars and checking passengers.

Djindjic, 50, appeared to have been targeted last month, when a truck suddenly cut into the lane in which his motorcade was traveling to Belgrade's airport. The motorcade narrowly avoided a collision, and Djindjic later dismissed the Feb. 21 alleged assassination attempt as a "futile effort" that could not stop democratic reforms.

"If someone thinks the law and the reforms can be stopped by eliminating me, then that is a huge delusion," Djindjic was quoted as saying by the Politika newspaper at the time.

Djindjic, who spearheaded the popular revolt that toppled Milosevic in October 2000, had many enemies because of his pro-reformist and Western stands.

He was key in Milosevic's extradtion to the U.N. War Crimes Tribunal in The Hague , Netherlands.

Djindjic was often criticized by his opponents for seeking too much power and for "mercilessly" attacking his political rivals.

A German-educated technocrat known to supporters as "The Manager" for his organizational skills and as "Little Slobo" to his detractors for his authoritarian tendencies, Djindjic nonetheless managed to gain some political capital from his willingness to surrender Milosevic despite a constitutional ban on extraditing Serbian citizens.

Though derided for his fondness for big cars and flashy suits, Djindjic's trade of Milosevic for 1.2 billion dlrs in international economic aid appeared to have won respect from people desperate to improve a living standard that ranks among the lowest in Europe.

Djindjic, a pro-Western leader, saw Serbia's fate as linked to the West and favored greater cooperation with the U.N. war crimes tribunal in The Hague, Netherlands, where Milosevic now is standing trial on charges of genocide and crimes against humanity.

He was pivotal in arresting and handing Milosevic to the war crimes tribunal in June 2001. For this, he was blasted by Serbian nationalists, including his former ally Vojislav Kostunica , who stepped down as Yugoslav president earlier this month after the formation of a new state, Serbia and Montenegro.

Djindjic's feud with Kostunica since the two jointly toppled Milosevic had virtually paralyzed the country's much-needed economic and social reforms.

PHOTO CAPTION

Serbia's Prime Minister Zoran Djindjic in seen in Belgrade in this Jan. 14, 2003 file photo. Djindjic--a key leader of the revolt that toppled former President Slobodan Milosevic  in October 2000--was seriously wounded Wednesday, March 12, 2003, in an assassination attempt. Djindjic was shot in the chest while entering the government building in Belgrade. (AP Photo/Srdjan Ili