Oscar Pistorius

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Oscar Pistorius holds his head in his hands as he listens to evidence being given in court in Pretoria, South Africa, Tuesday, April 15, 2014 after questioning by state prosecutor Gerrie Nel, had earlier finished. Pistorius is charged with the murder of his girlfriend Reeva Steenkamp, on Valentines Day in 2013. (AP Photo/Alon Skuy, Pool)

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Oscar Pistorius, center, leaves the high court in Pretoria, South Africa, Tuesday, April 15, 2014. Pistorius is charged with murder for the shooting death of his girlfriend, Reeva Steenkamp, on Valentines Day in 2013. (AP Photo/Themba Hadebe)

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Oscar Pistorius holds his hands to his face as he listens to evidence being given in court in Pretoria, South Africa, Tuesday, April 15, 2014 after questioning by state prosecutor Gerrie Nel, had earlier finished. Pistorius is charged with the murder of his girlfriend Reeva Steenkamp, on Valentines Day in 2013. (AP Photo/Alon Skuy, Pool)

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Oscar Pistorius holds his head in his hands as he listens to evidence being given in court in Pretoria, South Africa, Tuesday, April 15, 2014 after questioning by state prosecutor Gerrie Nel, had earlier finished. Pistorius is charged with the murder of his girlfriend Reeva Steenkamp, on Valentines Day in 2013. (AP Photo/Alon Skuy, Pool)

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Oscar Pistorius listens to evidence being given in court in Pretoria, South Africa, Tuesday, April 15, 2014 after questioning by state prosecutor Gerrie Nel, had earlier finished. Pistorius is charged with the murder of his girlfriend Reeva Steenkamp, on Valentines Day in 2013. (AP Photo/Alon Skuy, Pool)

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Oscar Pistorius rubs his eye in court in Pretoria, South Africa, Tuesday, April 15, 2014, after earlier questioning by state prosecutor Gerrie Nel. Pistorius is charged with the murder of his girlfriend Reeva Steenkamp. (AP Photo/Siphiwe Sibeko, Pool)

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Oscar Pistorius rubs his eye in court in Pretoria, South Africa, Tuesday, April 15, 2014, after earlier questioning by state prosecutor Gerrie Nel. Pistorius is charged with the murder of his girlfriend Reeva Steenkamp. (AP Photo/Siphiwe Sibeko, Pool)