Bosnia's Human Rights Ombudsman confirmed on Friday that this institution opened six cases regarding the tragic death of 21-year-old David Dragicevic from Banja Luka and the arrests that took place in late December last year during the 'Justice for David' group gathering.

Ombudsman Ljubinko Mitrovic said the Dragicevic case was first opened in May last year after which he initiated a meeting with Davor Dragicevic, the young man's father who has been for nearly a year seeking for justice and demanding that the perpetrators in his son's murder are found.

Four new cases were opened in the aftermath of December 25's protest, referring to the participation of children in the Justice for David group protest, apprehension of citizens, their detainment, how they were treated and allegations of torturing of the reporters.

The last case was launched after December 30 and another protest of Dragicevic's supporters, the ombudsman said.

“We are deeply involved in this case about which the police and prosecution must say what happened and must put an end to this,” he added.

For nearly a year, Dragicevic and the Justice for David group have been demanding that authorities unveil who murdered his son, whose lifeless body was found in March this year in a river of the north-western Bosnian town of Banja Luka.

The gatherings that father was organising in Banja Luka's central square the group unofficially named after the young man have turned into a mass anti-government protest as Dragicevic claimed the police and political leadership of Bosnia's Republika Srpska entity were involved in covering the evidence in this case.

The protest from December 25 resulted in detaining of several protesters including Davor Dragicevic and some opposition politicians, who have been supporting the father's battle throughout the last year.