Carl Pistorius, Oscar's brother, faces culpable homicide charges. The trial is expected next month. He will stand trial in connection with the death of a woman in a car crash in 2010.
Carl has been most active of Oscar's relatives in court - being briefed by lawyers, visiting brother in holding cell and comforting him in the dock.
Carl seemed to be the most anxious of Oscar's relatives as they waited for a bail ruling. They are clearly very close.
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The man, who was in his 30s, has not been identified, while several other people are believed to have suffered serious injuries.
The Olympian was one of several sports stars who opened up to the prince during an event for his mental health charity Heads Together.
There will be sunny spells, with temperatures peaking at 23 Celsius (73F). However, Northern Ireland will experience frequent showers.