 In mid @-@ June , the commander of the 2nd Company of the 7th Battalion at Bileća wrote to Adriatic Command complaining about the activities of the Ustaše , referring to them as " armed <unk> and animals " who were <unk> " honest Croats " . When the Italians heard that the Ustaše had burned two villages across the border in Montenegro , they sent an intelligence officer to Gacko to investigate the unrest . He did not accept the explanation of the gendarmerie commander in Gacko , who claimed that the violence was caused by " personal hatred and revenge " , and met with rebels . The rebels did not attack him or his security escort , and told him that the reason behind the rebellion was that " Croats and Turks are beating us and throwing us into a pit " . He concluded that the cause of the unrest was the attempt to <unk> the Serb community . 
