Karadzic’s sister Radmila Tomovic, her husband and daughter were also taken in for questioning in Niksic, local media reports said.
Karadzic was indicted by Hague tribunal prosecutors nearly 12 years ago on charges of committing war crimes during the Bosnian war. He has eluded capture despite a five million US dollar bounty.
He and fellow fugitive Bosnian Serb army general Ratko Mladic are thought to be responsible for orchestrating the massacre at Srebrenica in 1995, when some 8,000 Muslim men and boys were executed by Bosnian Serb forces.
Reports on Karadzic’s whereabouts have placed him in areas between Serbia, the Bosnian Serb entity Republika Srpska, and Montenegro. Mladic is thought to be hiding in Belgrade, aided by supporters in the military.
This week, Karadzic’s brother Luka – who was in Serbia when his relatives were taken away for questioning – said they could provide no information on Radovan’s whereabouts, and also accused the police of “unnecessary harassment”, said the Associated Press report.
This comes just one month after NATO troops raided the Pale homes of Karadzic’s children, Sonja and Sasa Karadzic.