Croatian is the official first language . Serbian language with its Cyrillic alphabet is the officially recognised second language . In Cyrillic , Vrginmost is known as '' Вргинмост '' and ( between 1996 and 2012 ) Gvozd as '' Гвозд '' . In 1097 , the last native Croatian King Petar Svačić was killed here during the Battle of Gvozd Mountain , which led to the mountain being renamed '' ' Petrova Gora ' '' ( '' ' Petar 's Mountain ' '' ) . It was ruled by Ottoman Empire between 1536 and 1691 as part of Bosnia Eyalet . In the summer of 1941 , the villages of then District of Vrginmost suffered heavy loss of civilian life with several hundred ethnic Serb men and boys perishing in the Glina massacre on 3 August 1941 . Majority of the victims of the August massacre in Glina were from the villages of Blatuša , Podgorje , Crevarska Strana , Slavsko Polje , Brnjavac , Pješčanica , Gornja Čemernica , Donja Čemernica , Bukovica and Batinova Kosa
Glina massacre
Glina massacres
Gvozd