FACTBOX: Wartime Bosnian Serb security chief Zupljanin

(Reuters) - Wartime Bosnian Serb security chief Stojan Zupljanin was arrested on Wednesday and will be sent to the United Nations tribunal in The Hague for trial on charges of war crimes, a spokesman for the prosecutor's office said.

Here are some details about him:

* Born in Bosnia-Herzegovina in September 1951, he graduated in Law from the University of Sarajevo. In 1975 he joined the Secretariat of Internal Affairs (SUP) in Banja Luka. In 1985, he became Chief of the Department for the Prevention of General Crime in Banja Luka.

* From 1991, Zupljanin was in command of the Regional Security Services Centre of Banja Luka (CSB) and in 1994, he became Internal Affairs Adviser to the President of Republika Srpska.

* Zupljanin was charged in 1999 by the International Criminal Tribunal for the former Yugoslavia (ICTY) with crimes against Muslims and Croats in a western area of Bosnia known as Bosanska Krajina early in the 1992-95 Bosnian war. The indictment was made public in 2001.

* Zupljanin was indicted on 12 counts, including torture and crimes against humanity for his alleged role in ethnic cleansing by Serb forces in Bosnia.

* Last January, Bosnia decided to freeze assets of the four remaining fugitives from the Hague-based court -- Karadzic, his military chief Ratko Mladic, Zupljanin and Goran Hadzic.

* In December 2007, Zupljanin's family urged the former police commander to "sacrifice" himself for the nation and turn himself in.

(Writing by David Cutler, London Editorial Reference Unit)