Vukovar massacre
The Vukovar massacre , also known as the Vukovar hospital massacre or the Ovčara massacre , was the killing of Croatian prisoners of war and civilians by Serb paramilitaries , to whom they had been turned over by the Yugoslav People's Army ( JNA ) , at the Ovčara farm southeast of Vukovar on 20 November 1991 , during the Croatian War of Independence . 
<triplet> Vukovar massacre <subj> prisoners of war <obj> target <subj> Vukovar <obj> located in the administrative territorial entity <subj> 20 November 1991 <obj> point in time <triplet> Yugoslav People's Army <subj> Croatian War of Independence <obj> conflict <triplet> Croatian War of Independence <subj> Yugoslav People's Army <obj> participant