Oscar Pistorius said that Reeva Steenkamp did not scream or shout as he grabbed a gun and fired shots that killed her.

At the athlete’s murder trial in Pretoria, prosecutor Gerrie Nel said it was “improbable” that Reeva Steenkamp would stand in the bathroom saying nothing while Oscar Pistorius was just 10 ft away shouting at her to call the police.

Oscar Pistorius, 27, said he could not explain why she had not shouted out.

The Paralympic champion denies murder saying the killing was a terrible accident.

He admits killing Reeva Steenkamp but says he fired his gun after mistaking her for an intruder.

Oscar Pistorius believed Reeva Steenkamp had been in bed when he grabbed his gun, made his way to the bathroom and fired shots through the door.

The prosecution says he killed her after an argument.

On the third day of his cross-examination, Gerrie Nel pressed Oscar Pistorius to explain the final moments leading up to the shooting.

Gerrie Nel asked why he had not checked whether Reeva Steenkamp had heard his calls for her to phone the police, or why he had not taken her to safety instead of going to confront the supposed intruder.

Oscar Pistorius said that Reeva Steenkamp did not scream or shout as he grabbed a gun and fired shots that killed her

Oscar Pistorius said it was his personality to confront what he believed was an intruder.

The trial has been adjourned until Monday morning.

Later, Gerrie Nel questioned Oscar Pistorius’s account that he had not heard Reeva Steenkamp shout or scream during the whole incident.

He said it was the “most improbable” part of the account.

“At that stage when you shouted at Reeva to phone the police, she was 3 m away from you in the toilet, but she didn’t say anything,” he said.

“Why would she not say anything?”

Oscar Pistorius said he did not know.

The prosecutor accused the athlete of lying, and said he had shot Reeva Steenkamp while she was talking to him from the bathroom.

“She wasn’t scared of an intruder,” he said.

“She was scared of you.”

He went on: “Are you sure that Reeva did not scream after the first shot?”

Oscar Pistorius took a long time to answer, and broke down into sobs.

“At no point did Reeva shout out or scream,” he said.

Gerrie Nel then disputed his claim, saying he would not have been able to hear if he had just fired his gun.

Prosecution witnesses have testified to hearing a woman scream, but the defense disputes their testimony.

Gerrie Nel repeated a line of attack he had used on Thursday, testing the defendant’s version of events, and accusing him of lying.

Oscar Pistorius told the court he had heard a window opening and closing, and had immediately got out of bed and grabbed his gun.

“I told Reeva to get down and phone the police,” he said.

Gerrie Nel asked if he had not looked at Reeva Steenkamp, or asked if she had heard the noise.

“On the morning of the 14th I was sure of what I heard,” he said.

“My whole being was fixated on this person that I thought was in the bathroom.”

The double amputee faces life imprisonment if convicted of murdering 29-year-old model Reeva Steenkamp.

If he is acquitted of murder, the court must consider an alternative charge of culpable homicide, for which he could receive up to 15 years in prison.

Oscar Pistorius also faces charges of illegally firing a gun in public and of illegally possessing ammunition, both of which he denies.

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