Prosecutors have sought a murder conviction against Oscar Pistorius before South Africa’s Supreme Court of Appeal.

They claim a lower court erred in acquitting the double-amputee athlete of that charge for killing his girlfriend Reeva Steenkamp, instead convicting him of culpable homicide.

Chief state prosecutor Gerrie Nel, left, and mother of the late Reeve Steenkamp, June, right, in the Supreme Court of Appeal in Bloemfontein, South Africa, yesterday. Photo: APChief state prosecutor Gerrie Nel, left, and mother of the late Reeve Steenkamp, June, right, in the Supreme Court of Appeal in Bloemfontein, South Africa, yesterday. Photo: AP

“On the objective facts, the accused cannot escape the conviction of murder,” prosecutor Gerrie Nel said, addressing a panel of five judges, who could convict Mr Pistorius of murder.

The judges could also rule that his manslaughter conviction should stand, or even order another trial.

The Olympic runner’s chief defence lawyer, Barry Roux, also presented arguments to the judges, who wore black robes and sat on ornate wooden chairs with red backing.

If convicted of murder, Mr Pistorius would face a minimum sentence of 15 years in prison. South Africa no longer has the death penalty.

Prosecutors say Judge Thokozile Masipa made an error at Mr Pistorius’s trial last year when she acquitted him of murder for killing Ms Steenkamp on Valentine’s Day 2013. On being found guilty of culpable homicide, a charge comparable to manslaughter, he was sentenced to five years in prison.

Mr Pistorius, 28, was released from jail last month after serving a year in prison and was moved to house arrest at his uncle’s mansion. He was not present at the hearing.

On the objective facts, the accused cannot escape the conviction of murder

June Steenkamp, Ms Steen­kamp’s mother, was inside the wood-panelled courtroom in the central city of Bloemfontein.

She sat behind Mr Nel as he presented his arguments. The panel is headed by Judge Lex Mpati, the president of the Supreme Court of Appeal, the second-highest court in South Africa.

Asking the judges to upgrade Mr Pistorius’s conviction to murder, Mr Nel said Judge Masipa did not correctly apply the law at the culmination of Mr Pistorius’s dramatic seven-month trial.

The prosecution’s argument rests on a part of South African law known as dolus eventualis, which calls for a person to be convicted of murder with lesser intent if they foresaw that someone could be killed as a result of their actions, but went ahead anyway.

Prosecutors believe Mr Pistorius knew someone could die when he shot four times through a toilet cubicle door in the pre-dawn hours of February 14, 2013, killing Ms Steenkamp.

Mr Pistorius gave evidence that he had no intention to kill, and fired out of fear for his life, believing a dangerous intruder was inside the toilet cubicle. Mr Nel also said Judge Masipa ignored or simply paid “lip service” to some circumstantial evidence against Mr Pistorius at his trial.

The judges, who have studied the tens of thousands of pages of court transcript from Mr Pistorius’s trial, interrupted Mr Nel and Mr Roux frequently to question them.

One of the judges pressed Mr Roux on whether Mr Pistorius could not have foreseen that he would kill someone by shooting multiple times through the door of the very small cubicle.

“If you look at the photographs, there’s room behind there for a toilet bowl and a person and just about nothing else,” Justice Lorimer Leach said. “There’s nowhere to hide. It would be a miracle if you didn’t shoot someone.”

Arguments were scheduled to last just one day and the judges can reach a decision with a simple majority. The judges were not expected to issue their verdict yesterday and there is no timeframe for when they will, although the court has said it would aim to release a decision by the end of this month.

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