According to the testimonies, at the time relevant to the indictment, those ZNG members were defending the city of Karlovac against attacks by Serb paramilitaries at the front-line when the incident occurred.
The testimonies given today by Zoran Jurcevic, Zlatko Racic, Hrvoje Milicevic, Drago Gojak, Marijan Gojak and Marijan Protulipac were similar.
Witness Racic said that he and several other ZNG members were wounded by a hand grenade that was thrown from the Roknic family house. They said today that they did not know who, after the hand grenade had been thrown, entered the house in which three people were killed.
The prosecution accused Gojak of having raided, together with a group of unidentified ZNG members, the home of Marko Roknic in the Sajevac neighbourhood of Karlovac in October 1991 and of having shot dead Roknic's 14-year-old daughter Danijela and his sister-in-law Dragica Ninkovic. Roknic was killed after that in the yard. Although the police suspected Gojak also of murdering Roknic, the indictment alleges that an unidentified member of the ZNG group was responsible for the man's death.
The defendant has been insisting on his innocence since the opening of this case.
The case was opened when the two surviving members of the Roknic family -- Marko's wife Branka and their son Nenad, who now live in Serbia, gave their statements about it to the Serbian war crimes tribunal in Belgrade.
The case was transferred to the Croatian judiciary, and Gojak was arrested on 25 May 2010. Since then, he has been in custody.
According to the testimony of Branka Roknic and Nenad Roknic, four armed men raided their home on 5 October 1991, and the Roknics recognised two of them as their neighbours.
The remains of the killed members of the Roknic family were exhumed at the Popovic Brdo cemetery near Karlovac in 2010.