A former SS officer is due to appear in court in Germany later today, where he stands accused of murdering a Dutch resistance fighter at least 70 years ago.
Siert Bruins, 92, could face a life sentence if found guilty of the murder of Aldert Klaas Dijkema in September 1944.
The trial is a landmark case in Germany as Bruins is the last alleged Nazi criminal to be detained.
Another former SS officer, Heinrich Boere, began a life sentence in December 2011 for murdering three Dutch civilians during World War II.
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Mladic, now 75, was the military commander of Bosnian Serb forces in the 1990s, who fought against the Bosnian Croat and Bosniak armies.
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His representatives said Cassidy, who was hospitalised last week, died "surrounded by those he loved."