Earlier in the day, the Bosnian police arrested Glavas in the area of Kupres, western Bosnia, in line with an international arrest warrant issued by the Croatian judiciary.
The Bosnian prosecution officials will question Glavas in order to officially establish whether he holds the citizenship of Bosnia-Herzegovina.
Before entering the building housing the Prosecutor's Office under police escort, Glavas said in a brief address to reporters that in Bosnia-Herzegovina he "feels like in his second homeland".
Last Friday, Glavas was sentenced by the Zagreb County Court to 10 years in prison for his role in war crimes committed against Serb civilians in Osijek in the early 1990s. He had not been in custody during the trial because of his parliamentary immunity, and escaped to neighbouring Bosnia and Herzegovina shortly before the announcement of the verdict.
Police spokesman Robert Cvrtak said that the police of Bosnia's Croat-Muslim entity had known Glavas's whereabouts all the time since he fled to Bosnia.