Croatia deployed special police forces, specifically the
Lučko, Rakitje and Sljeme special police units based in and around
Zagreb, supported by additional police forces drawn from
Karlovac and
Gospić to retake the Plitvice Lakes area. The Croatian police force, commanded by
Josip Lucić, used several buses and passenger cars, as well as an
armoured personnel carrier, to approach the Plitvice Lakes area. The main 180-strong group of the Rakitje Special Police Unit (SPU), directly commanded by Lucić, arrived in dense fog, along the
main road from Zagreb via the
Korana River bridge. The bridge was secured by the Lučko unit shortly before midnight on 30/31 March 1991. An auxiliary force approached the Plitvice Lakes via
Ličko Petrovo Selo, while the Kumrovec SPU was deployed in the area between the lakes and Gospić, where it captured the Ljubovo Pass to secure the right flank of the main effort. The total attacking force comprised approximately 300 troops. The approaching convoy was ambushed at a barricade set up by the SAO Krajina force near Plitvice Lakes before 7:00 in the morning of
Easter Sunday, 31 March 1991. The SAO Krajina force attacked the vehicles carrying the Croatian police and held their position until they fell back to the national park post office two and a half hours later. The Croatian advance, additionally hindered by deep snow, was achieved at a cost of six wounded. The attacking force secured its objectives by 11:00 am. As the attacking operation reached its completion, the
Croatian military sustained its first combat fatality of the
Croatian War of Independence, when
Josip Jović was killed by a machine gun covering retreating SAO Krajina troops. Shortly afterwards, the
Yugoslav Air Force dispatched a
Mil Mi-8 helicopter to attend to wounded on both sides, and it left the area after an hour and a half. The helicopter was dispatched by
Colonel General Anton Tus, head of the Yugoslav Air Force at the time, following a request by
Josip Boljkovac,
Interior Minister of Croatia. As the fighting around Plitvice ended, sporadic gunfire was reported near
Titova Korenica, to the south. The same afternoon, a Croatian police station was established at the Plitvice Lakes and Tomislav Iljić was appointed its commanding officer. The station was staffed by approximately 90 police officers who were redeployed from Gospić. The
Presidency of Yugoslavia met in an emergency session the same evening to discuss the clash. At the insistence of
Serbia's representative on the Presidency,
Borisav Jović, the JNA was ordered to intervene, gain control in the area and prevent further combat. The Serbian parliament also met in an emergency session, treating the clashes as a virtual
casus belli and voting to offer the Krajina Serbs "all necessary help" in their conflict with Zagreb. The following day, the SAO Krajina adopted a resolution to the effect that the territory was incorporated into Serbia, whose constitution and laws were adopted for use in the Serb-held areas of Croatia. Croatian authorities accused Serbia's president,
Slobodan Milošević, of stage-managing the unrest in order to break Croatia's resolve to declare independence unless
Yugoslavia was transformed into a loose confederation. They also accused him of attempting to coax the JNA to overthrow Croatian government.
JNA intervention On 1 April, the JNA established a
buffer zone to separate the belligerents at Plitvice Lakes, deploying elements of the 1st and the 5th Military Districts. Those were an armoured battalion of the 329th Armoured Brigade based in
Banja Luka, a battalion of the 6th Mountain Brigade based in
Delnice, a reconnaissance company and a mechanised battalion of the 4th Armoured Brigade based in
Jastrebarsko and Karlovac, a battalion of the 306th Light Anti-Aircraft Artillery Regiment based in Zagreb, a signals company of the 367th Signals Regiment based in
Samobor, a company of the 13th Military Police Battalion based in
Rijeka and an
anti-aircraft artillery battery drawn from the 13th Proletarian Motorised Brigade based in Rijeka. Finally, the 5th Military District set up a forward command post at the Plitvice Lakes. The JNA force at the Plitvice Lakes was commanded by
Colonel Ivan Štimac. The commanding officer of the 5th Military District,
Major General Andrija Rašeta, in overall command of the JNA intervention, told the media that his men were not protecting either side and were there only to prevent ethnic confrontations for an indeterminate period. However, the
Croatian government reacted furiously to the JNA move. Tuđman's aide, Mario Nobilo, claimed that the JNA had told Croatian officials that it would engage the police if they did not leave Plitvice. In a radio address, Tuđman said that the JNA would be regarded as a hostile army of occupation if its course of action remained unchanged. On 2 April, the JNA handed the Croatian authorities an ultimatum, requesting the police leave Plitvice. The special police left Plitvice the same day, but the 90 officers staffing the newly established police station remained in place. ==Aftermath==