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Pretoria - Oscar Pistorius's lawyer, Kenny Oldwage, was second to address the High Court in Pretoria on Monday.
Earlier Pistorius pleaded not guilty to all of the charges he faces.
Pistorius is charged firstly with the murder of his model girlfriend, Reeva Steenkamp on February 13, 2013.
Oldwage said Pistorius totally rejected the murder charge, and that it was an awful accident that ended the pair's “loving relationship”.
Pistorius's version of events on the night of the shooting, originally given at the bail application last year, was once again recounted for the court.
Pistorius had left the bedroom to bring in two fans, when he heard a noise in his bathroom. He assumed an intruder had managed to climb through the bathroom window, and assuming Reeva was still in bed, he approached the door with gun in hand. He opened fire on the door, in fear of the intruder because he was on his stumps and unable to protect himself otherwise.
The State has argued that Pistorius knew Steenkamp was in the bathroom and that he intended to murder her.
Oldwage said that the State's witness who allegedly heard screaming from Pistorius's Silverwoods home prior to the shooting was wrong.
The witness who allegedly heard the shouts could not have done so, according to Oldwage, as she apparently lived more than 100 metres away.
Oldwage said the State was relying on “the possibility” that there was an argument to prove that Pistorius had intended to kill Steenkamp.
The State has conceded that Pistorius was about 1.5 metres away from the door, and that the accused was still on his stumps, said Oldwage.
The defence then argued that former investigating officer Hilton Botha had contaminated the crime scene, and that this put the State's evidence in a suspect light.
It was argued that the State had no evidence to prove the alleged fight, and that certain witnesses would only be brought in to assassinate Pistorius's character, and that this testimony should be inadmissable.