Oscar Pistorius has removed his prosthetic legs in a South African courtroom as part of his defence team's argument that the double-amputee athlete, convicted of murdering girlfriend Reeva Steenkamp, deserves leniency when he is sentenced.

Defence lawyer Barry Roux asked Pistorius to remove his prostheses, and the former track star then walked in front of Judge Thokozile Masipa, who will deliver the sentence after hearings end this week.

Pistorius was not wearing his prosthetic legs when he fatally shot Ms Steenkamp through a toilet cubicle door in his home 2013; he testified at his murder trial that he felt vulnerable and thought an intruder was in the house.

Prosecutors have said Pistorius intentionally killed Ms Steenkamp after an argument.

Read more: Oscar Pistorius in court for murder sentencing

Mr Roux's plea to Judge Masipa followed the evidence of the final witness at the hearing, a cousin of Ms Steenkamp, who accused Pistorius himself of not giving the "true version" of the shooting.

The cousin, Kim Martin, also criticised Pistorius for not testifying at this week's sentencing hearing but agreeing to a television interview that will be broadcast after the hearing ends.

"I think it's very unfair to want to talk to the world about your version when you had the opportunity in court to do so," Ms Martin said under questioning from chief prosecutor Gerrie Nel.

Pistorius is currently living under house arrest after initially serving one year of a five-year prison sentence for manslaughter for shooting Ms Steenkamp multiple times in 2013. That conviction was overturned last year by an appeals court, which convicted Pistorius of the more serious charge of murder.

But Mr Roux said there were "serious enemies" of Pistorius's case and listed what he said were misconceptions that still existed about the shooting and the Supreme Court of Appeal's decision last year to change Pistorius's conviction to murder.

Mr Roux said the first misconception was that people believed Pistorius was convicted of murder for intentionally killing Steenkamp when he shot her through a toilet cubicle door in his home.

The Supreme Court found Pistorius guilty of murder in that he realised that someone might die as a result of his actions and went ahead anyway. The ruling did not say that Pistorius knew it was Ms Steenkamp - and not an intruder, as he claimed he thought it was - behind the door.

Mr Roux also said it was not the "strong, ambitious" Pistorius, the history-making Olympic runner and multiple Paralympic champion, who fired four shots that night. Rather, it was a disabled man in fear for his life, Mr Roux argued.

"It was not the man winning gold medals that must be judged," the defence lawyer said. "It is common cause it is a 1.85-metre man standing on his stumps at 3 o'clock in the morning in the dark that must be judged."

Later, Mr Roux said: "They want to see Oscar Pistorius running to the bathroom with his gold medal around his neck."

The "emotions" of the trial had also clouded some facts, Mr Roux argued, including that the prosecution's allegation that there was a loud fight between Pistorius and Ms Steenkamp before he shot his girlfriend had never been proved.

As Mr Roux spoke about the shooting, Pistorius hunched over in the courtroom and held his head in his hands. At other times, he sat up straight on his wooden bench.

Judge Masipa, who initially acquitted Pistorius of murder before her decision was overturned, will also decide the new sentence. The hearing is scheduled to run through to Friday this week. South Africa's minimum sentence of 15 years in prison for murder can be reduced in some circumstances.

While prosecutors are seeking a long jail term for the 29-year-old Pistorius, his defence has argued that he should be spared prison and allowed to do community work with children.

In her testimony, Ms Martin, Ms Steenkamp's cousin, said she and her family are struggling to cope with Ms Steenkamp's death and that every Valentine's Day - the day when Ms Steenkamp was fatally shot - is the "worst day for us".

Ms Martin said her family lights a candle for Ms Steenkamp, a model, at Christmas and that they try to celebrate such special days despite the grief.

"We don't want every occasion to become a funeral," she said.

Ms Martin also questioned Pistorius's statement that he killed Ms Steenkamp by mistake thinking an intruder was in the house.

"All we've ever wanted is the truth," Ms Martin said. "People say we've got the truth, but we didn't. Oscar's version has changed so many times. I don't feel the true version came out."

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