The UN court said in a press release the tribunal's deputy registrar had issued a notification confirming that Prcac had completed serving his prison sentence today and was released.
Prcac, 68, was arrested by the NATO-led Stabilisation Force in Bosnia-Herzegovina on 5 March 2000, when he was transferred to The Hague.
On 2 November 2001, he was sentenced to five years' imprisonment for persecution on political, religious or racial grounds as crimes against humanity, and for killing and torture of prisoners as violations of the laws and customs of war. The Appeals Chamber confirmed the sentence earlier this week.
Prcac was deputy commander of Omarska, a camp near Prijedor in north-eastern Bosnia, where more than 7,000 local Bosnian Muslims, Croats and other non-Serbs were detained in the summer and spring of 1992.
The prisoners were kept in inhumane conditions, starved, brutally beaten, physically, psychologically and sexually abused. Several hundred were killed. Footage of skinny prisoners behind barbed wire at Omarska were seen around the world in 1992, recalling images from WW2 Nazi death camps and showing that war crimes were being committed in Bosnia.
Alongside Prcac, the Hague tribunal on February 28 convicted Miroslav Kvocka, another deputy commander at Omarska, to seven years' imprisonment, guard commander Mladjo Radic to 20 and guard Zoran Zigic to 25 years.