Oscar Pistorius

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Oscar Pistorius, right, places his hand over his eyes while sitting in court on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Marco Longari, Pool)

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Oscar Pistorius, left, stands in the dock on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Marco Longari, Pool)

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Oscar Pistorius arrives at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Themba Hadebe)

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Oscar Pistorius sits in the dock on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Werner Beukes, Pool)

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Oscar Pistorius sits in the dock on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Werner Beukes, Pool)

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Oscar Pistorius arrives at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Themba Hadebe)

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Oscar Pistorius passes a note for his legal counsel from the dock on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Marco Longari, Pool)

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Oscar Pistorius's uncle Arnold Pistorius, right, walks with wife Lois, left, at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Oscar Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Themba Hadebe)

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Oscar Pistorius sits in the dock on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend, Reeva Steenkamp, on Valentines Day in 2013. (AP Photo/Marco Longari, Pool)

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Oscar Pistorius writes notes while sitting in the dock on the fourth day of his trial at the high court in Pretoria, South Africa, Thursday, March 6, 2014. Pistorius is charged with murder for the shooting death of his girlfriend Reeva Steenkamp on Valentine's Day in 2013. (AP Photo/Marco Longari, Pool)