Pistorius 'Wipes Away Tears' as Bullet Wounds are Discussed

Oscar Pistorius in court on the second day of his trial at the North Gauteng High Court in Pretoria, South Africa, on March 4, 2014. Lawyers for Paralympian Oscar Pistorius will on March 4 resume a searing cross-examination of a key witness at his murder trial who claims to have heard screams, then shots, as his girlfriend was killed. The second day of Pistorius's trial for the Valentine's Day killing of Reeva Steenkamp will begin with lawyer Barry Roux redoubling efforts to pick apart the prosecution's premier witness.
Oscar Pistorius in court on the second day of his trial at the North Gauteng High Court in Pretoria, South Africa, on March 4, 2014. Lawyers for Paralympian Oscar Pistorius will on March 4 resume a searing cross-examination of a key witness at his murder trial who claims to have heard screams, then shots, as his girlfriend was killed. The second day of Pistorius's trial for the Valentine's Day killing of Reeva Steenkamp will begin with lawyer Barry Roux redoubling efforts to pick apart the prosecution's premier witness. ANTOINE DE RAS / AFP - Getty Images

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Erin Conway-Smith, a senior correspondent with NBC News' partner GlobalPost, highlights that accused killer Oscar Pistorius became emotional during Tuesday's testimony.

The double-amputee Olympian is on trial for killing his girlfriend Reeva Steenkamp on Feb. 14, 2013.

The trial continues.