Reeva Steenkamp's cousin has told Oscar Pistorius' sentencing hearing that the athlete must "pay for what he's done" and that she did not believe the sincerity of his courtroom apology to the family of the woman he killed.

Kim Martin, while giving testimony on the impact of Ms Steenkamp's death on her family, said they are "not seeking revenge" for the fatal shooting, but that Pistorius needs "sufficient punishment".

At the court in Pretoria, Judge Thokozile Masipa is listening to testimony from witnesses before deciding what punishment the double-amputee Olympian must serve after convicting him of culpable homicide for shooting Ms Steenkamp at his home last year.

Pistorius' defence lawyers have argued for a sentence of three years of house arrest. Prosecutors say the former star athlete and Paralympic champion should be sent to jail.

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