Visegrad is the site where between April and June 1992 Bosnian Serb forces killed 1500 civilians, dumping their bodies into the Drina river.
The bodies of more than 700 victims in Visegrad are reported missing and efforts are still being made to recover them.
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Mladic is accused of masterminding the 1995 Srebrenica massacre and other atrocities during the war and was arrested on Thursday after 16 years on the run.
It's expected he'll be transferred to the International Criminal Tribunal for the former Yugoslavia in The Hague, facing charges of war crimes, genocide and crimes against humanity.

