The Dutch authorities have opened an investigation into how a Bosnian Croat war criminal smuggled poison into a courtroom in The Hague to kill himself during a televised appeal hearing, the BBC reports.
Slobodan Praljak, 72, died in hospital on Wednesday shortly after downing a small vial of liquid, which he drank after declaring he was innocent.
His 20-year sentence for war crimes in Bosnia had just been reaffirmed.
Some Bosnian Croats have held vigils to remember a man they regard as a hero.
The confirmation rulings against Praljak and five other defendants brought an end to more than 20 years of work by the tribunal.