2 8 ▁June . ▁In ▁July ▁ 1 9 9 1 , ▁the ▁J NA ▁started ▁to ▁open ly ▁confront ▁the ▁Cro at ian ▁police ▁and ▁the ▁Z NG ▁in ▁L ika . ▁On ▁ 1 ▁July , ▁Pl it vice ▁police ▁station ▁was ▁surrounded ▁by ▁the ▁J NA , ▁and ▁on ▁ 6 ▁July , ▁two ▁Z NG ▁troops ▁were ▁killed ▁and ▁another ▁two ▁wounded ▁in ▁a ▁J NA ▁amb ush ▁near ▁G os pi ć . ▁Further ▁es cal ation ▁of ▁the ▁fighting ▁was ▁seen ▁at ▁the ▁L jub ovo ▁pass ▁on ▁the ▁G os pi ć – K oren ica ▁road , ▁where ▁the ▁J NA ▁and ▁SA O ▁K raj ina ▁troops ▁fought ▁and ▁pushed ▁the ▁Z NG ▁back ▁on ▁ 2 8 – 2 9 ▁July . ▁ ▁Eth nic ▁violence ▁continued ▁to ▁es cal ate ▁when ▁Ser b ▁par amil itar ies ▁ab duct ed ▁and ▁killed ▁five ▁Cro at ian ▁civ ili ans ▁from ▁Lov in ac ▁in ▁southern ▁L ika ▁on ▁ 5 ▁August , ▁and ▁a ▁police ▁check point ▁in ▁Ž uta ▁Lok va ▁was ▁attacked . ▁In ▁early ▁August , ▁the ▁J NA ▁moved ▁the ▁ 2 3 6 th ▁Pro let arian ▁Motor ized ▁Brigade ▁( a ▁brig ade ▁in ▁name ▁only , ▁the ▁ 2 3 6 th ▁was ▁actually ▁only ▁a ▁company - s ized ▁unit ) ▁and ▁a ▁portion ▁of ▁the ▁motor ised ▁batt alion ▁of ▁the ▁ 4 th ▁Arm oured ▁Brigade , ▁previously ▁deployed ▁to ▁the ▁L