 On 3 June , there were several incidents in which armed villagers spontaneously retaliated against the local authorities . That afternoon , 20 Ustaše were entering <unk> <unk> to confiscate firearms when they were attacked by a group of armed villagers . The villagers withdrew after a short firefight , with one of their number being captured . Reinforcements from the Home Guard and gendarmerie soon arrived , along with more Ustaše who burned another 20 houses and shot a woman . On the night of 4 / 5 June , a group under the control of the Ustaše commissioner for the Gacko district , Herman <unk> , killed 140 Serbs in the village of Korita , near Bileća , and threw their bodies into a nearby <unk> . Another 27 Serbs from the village were killed between this massacre and 9 June , and over 5 @,@ 000 head of livestock were stolen and distributed to Muslim villages in the Gacko area for the exclusive use of the Ustaše . The estimated number of Serbs killed at Korita vary from 133 to 180 . 
