(CNN) -- Prosecutor Gerrie Nel went on the attack again Thursday, trying to discredit a defense witness for Oscar Pistorius on the last day of testimony before the court takes a two-and-a-half week break. Forensics expert Roger Dixon, on the stand for a third day, was grilled over his interpretation of a reconstruction of the scene where double-amputee runner Pistorius killed girlfriend Reeva Steenkamp in February last year. One key line of questioning dealt with the position of a magazine rack within the toilet room where she was shot. Under pressure from Nel, Dixon directly contradicted Pistorius' version of where he saw the magazine rack when he entered the toilet room after shooting Steenkamp.
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Prosecutor Gerrie Nel seeks to discredit expert defense witness Roger Dixon
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On the stand, Dixon contradicts Oscar Pistorius' testimony over position of magazine rack
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The prosecution says Pistorius intentionally shot and killed Reeva Steenkamp after a fight
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Pistorius denies murder, saying he mistook his girlfriend for an intruder
In his own testimony, @placeholder said that when Steenkamp was slumped over the toilet bowl, she wasn't on top of the magazine rack.