Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

Prosecutors asked a South African court on Friday to review the “shockingly” lenient six-year prison sentence imposed on Olympian Oscar Pistorius for killing his girlfriend Reeva Steenkamp.

Lawyers told a hearing that the double-amputee sprinter had not shown "genuine remorse" for the Valentine’s Day 2013 shooting and said the original trial judge had exercised too much discretion.

Pistorius, 30, fired a gun multiple times through a closed bathroom door and said he thought Steenkamp was a dangerous intruder.

The so-called "Blade Runner" did not attend the hearing in the city of Bloemfontein. He is serving his sentence in a prison near the capital, Pretoria. Steenkamp's mother, June, looked on from the public benches.

June Steenkamp watches Friday's appeal. AP

Let our news meet your inbox. The news and stories that matters, delivered weekday mornings. This site is protected by recaptcha

It was the second challenge from prosecutors. In 2015, they successfully overturned Judge Thokozile Masipa’s verdict of culpable homicide — or manslaughter — and secured a murder conviction.

Masipa then sentenced Pistorius to six years in prison, a term just one year longer than her original sentence for manslaughter. There is no death penalty in South Africa.

The country’s National Prosecuting Authority quickly announced it would appeal, calling the term “disproportionate,” “shockingly too lenient” and “an injustice.”

Judges can deviate from prescribed minimum sentences if there are compelling circumstances. However, prosecutor Andrea Johnson told Friday's hearing at South Africa's Supreme Court of Appeal that the discretion was exercised “inappropriately.”

She said Pistorius had not shown "genuine remorse" for shooting Steenkamp.

“Genuine contrition can only come from admission of the extent of one’s error,” she said, and “not simply feeling sorry for himself.”

Oscar Pistorius and Reeva Steenkamp LUCKY NXUMALO / AFP - Getty Images, file

Johnson also said the athlete had not adequately explained why he fired the gun and “impose a death sentence on whoever was in that toilet.”

Pistorius’ lawyer, Barry Roux, said Judge Masipa had fully “understood” the mitigating circumstances, including the runner’s fragile psychological condition and his public fall from grace.

“He was already broken,” Roux said, yet the judge still imposed a prison sentence. “He was lambasted for things that were really not true.”

Pistorius was treated in hospital in 2016 for injuries to his wrists.

The five judges hearing Friday’s appeal reserved judgment for a later date.