Reeva Steenkamp was shot in quick succession as she fell down, a forensics expert has told Oscar Pistorius’ murder trial.
This differs from a police ballistics witness who said there was short break between the first and second shots.
Oscar Pistorius denies intentionally killing Reeva Steenkamp in early hours of Valentine’s Day last year.
He says he fired rapidly in fear through the toilet door after he mistook Reeva Steenkamp for an intruder.
The prosecution says the 29-year-old model and law graduate was deliberately killed after the couple had an argument.
Oscar Pistorius faces 25 years to life in prison if convicted of premeditated murder.
The trial has been adjourned until Thursday, which will be the last day before a break; proceedings will resume on Monday 5 May.
Forensics expert Roger Dixon, a defense witness, says Reeva Steenkamp was standing at an angle to the door and that all four bullets hit her as fell to the ground.
Earlier in the trial, ballistics expert Captain Christiaan Mangena said he believed Reeva Steenkamp was standing up facing the closed door when she was hit in the right hip.
He said she then fell back onto a magazine rack next to the toilet before three more bullets were fired at the door, one of which missed her.
Roger Dixon’s testimony challenges the state’s version that Reeva Steenkamp would have had time to scream after the first bullet and that Oscar Pistorius then changed aim and continued firing.
On Tuesday, Roger Dixon told the court his tests showed that with the light out, Oscar Pistorius’ bedroom would have been almost completely dark on the evening of the shooting, despite a couple of LED lights.
This also supports Oscar Pistorius’ evidence that he did not see whether Reeva Steenkamp was still in bed when he got up.
The court also heard sound recordings Roger Dixon had made – of a cricket bat striking a door similar to the one in Oscar Pistorius’ toilet, and of gunshots fired through the door at a distance of 60m (196ft) and 180m.
Roger Dixon seemed to struggle to tell the sounds apart, which the defense will use to cast doubt on what neighbors say they heard that night.
Prosecution witnesses have testified to hearing a woman scream followed by gun shots, but the defense disputes their testimony, saying the only scream came from Oscar Pistorius – after he had fired.
But prosecutor Gerrie Nel has sought to cast doubt on Roger Dixon’s credibility and qualifications as a forensics witness during his cross examination on Wednesday.
Roger Dixon is a geologist and university lecturer who worked as head of materials analysis at a police forensic laboratory in Pretoria for 18 years until 2012 and repeatedly said he was not a ballistics expert.
Gerrie Nel also sought to prove that he was out of his depth when he was testifying about marks on Reeva Steenkamp’s body.
He had identified one as a bruise which other pathologists had not, Gerrie Nel said.
At one stage Roger Dixon used the phrase “in my layman’s understanding”.
“Now you call yourself a layman. You see how irresponsible it is to make inferences that aren’t in your area of expertise,” Gerrie Nel replied.
Roger Dixon took the stand after seven days of testimony from the sprinter came to an end with him reading a Valentine’s Day card from his girlfriend.
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