The South African prosecutors' office says it will appeal against Oscar Pistorius' six-year prison sentence for the murder of girlfriend Reeva Steenkamp, calling it ``shockingly'' lenient.
The National Prosecuting Authority says it will file appeal papers on Thursday.
Pistorius was sentenced on July 6 for shooting Steenkamp at his home in 2013.
Prosecutors had sought 15 years in prison for the double-amputee Olympic athlete, the prescribed minimum sentence for murder in South Africa, but a judge said there were compelling
circumstances in Pistorius' case to give him a lesser sentence.
Prosecutors said Thursday the six-year sentence was ``shockingly too lenient'' for the crime of murder and was an ``injustice.''
Pistorius was convicted of murder after an appeal by prosecutors, having initially been acquitted of the charge.