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Oscar Pistorius: Key Arguments In Murder Trial
After two weeks of evidence in the murder trial of Oscar Pistorius, the key points of contention are now clear.
The prosecution is trying to prove the athlete deliberately killed his girlfriend, Reeva Steenkamp, while the defence argues he mistook her for an intruder when he fired his gun through a locked toilet door.
The prosecution called several of Pistorius' neighbours to describe what they heard in the early hours of February 14, 2013.
They said they heard a woman screaming and a man's voice.
This is important for the State's case as they try to show the athlete must have known Ms Steenkamp was in the toilet when he opened fire.
The defence has tried to show the neighbours mistook the distressed cries of Pistorius for the screams of a woman.
The lead advocate, Barry Roux, struggled with this, with the neighbours re-iterating they were convinced they heard a woman's voice.
There is more evidence to come from the defence later on this issue.
Mr Roux indicated his team of experts had done tests which indicate the neighbours could not have heard anyone screaming from inside the locked toilet with the window closed.
:: Sound Of Gun Shots
The prosecution again relied on the testimony of neighbours who claim to have heard four gunshots shortly after being woken by the sound of a woman screaming.
They described how the screams continued during the gun shots and "faded away" just afterwards.
The State wants to link the screaming and the gunfire to show the athlete deliberately killed Ms Steenkamp.
The defence has argued that what the neighbours heard was not gunshots but the sound of Pistorius using a cricket bat to break through the toilet door.
Mr Roux wants to show Ms Steenkamp was already unable to scream by this point because of her injuries, so she could not have been overheard by neighbours.
Again, we can expect sound experts to testify on this later in the case.
:: Breaking Down The Door
A police forensic analyst examined the marks on the toilet door caused by the cricket bat and told the court the height of them indicated Pistorius was on his stumps when he wielded the bat.
The defence argued the marks were consistent with the athlete wearing his prosthetic legs while he smashed through the door.
Pistorius says he was on his stumps at the time of the shooting, but then rushed to the bedroom and put on his false legs after realising he might have shot his girlfriend by mistake.
:: Integrity Of Crime Scene
The prosecution has tried to show the crime scene was correctly secured and the evidence from it handled correctly.
Prosecutor Gerrie Nel has struggled with this, as his own police witnesses have admitted to errors even before cross-examination, including an officer handling the gun without gloves and one of Pistorius' watches going missing from the scene.
The defence has sought to challenge the credibility of the police investigation by arguing that officers' mistakes led to the evidence being contaminated and even "tampered with".
This will be a key part of the defence case and is an area where the prosecution seems particularly vulnerable.