28 March,2013 09:28 AM IST | | AFP
Carl Pistorius, 28, has been charged with culpable homicide and reckless driving after a 2008 road accident in which a 36-year-old woman motorcyclist was killed.
"I plead not guilty," he told the court as the trial opened in Johannesburg.
The hearing came a day before his Paralympian brother makes a court challenge over the stringent bail conditions imposed on him after the Valentine's Day killing of his model girlfriend.