Transcript for More High Drama at the Oscar Pistorius Trial
don't play around with the lives of children, taking personal responsibili responsibility. And after three days of grilling by the prosecutor they callulhe bl terrier, Oscar Pistorius is still on the stand. Lama Hasan was there. Reporter: The grueling day three cross examination of Oscar Pistorius reaching a crescendo. You shot at her knowing that she's behind that door. That's not true, my lady. Reporter: The prosecutor nicknamed the bull terrier once again going after the his model girlfriend, reeva steenkamp. Asking if Pistorius really was afraid of intruders the night he fired four bullets into a bathroom door, why he approached the bathroom at all. Why did you not leave through your bedroom door? My lady, I have very, very limited mobility on my stumps on a hard surface like tiles. Reporter: Or make sure steenkamp heard the warning? Pistorius says he made to get down and call police. You never waited for a response. That's correct. Reporter: With reeva in the bathroom cubicle and Pistorius on the other side of this door, the prosecution pouncing. How could he have not known she was in here? All week Pistorius tested emotionally. And cross examination isn't even done yet. He has pled not guilty to all charges. Lama Hasan, ABC news, Pretoria, South Africa. So we turn to Dan Abrams. Three weeks into the trial, how is he doing? He's got to be worried. I can't see how the judge isn't going to convict him of the lesser crime of culpable homicide. What is his biggest problem? He's saying he didn't realize that reeva wasn't in the bed. But he had to get the gun from underneath the bed. And overt contradictions, he said he woke up, heard a noise in the bathroom, and realized someone was in there. He said, I concede, I didn't go in the balcony. This is important to evaluate, was it a fight or did he think there was an intruder? Thank you. And last week, we reported on those caring for America's
This transcript has been automatically generated and may not be 100% accurate.