Prof James Grant said his advice to prosecutor Gerrie Nel was to appeal Pistorius's conviction.
The judge has handed down a sentence of 5 years in prison to Oscar Pistorius.
State prosecutor Gerrie Nel says Pistorius is not the victim and called for a minimum sentence of 10 years.
While the defence has suggested house arrest, the state has asked for a 10-year prison term.
Reeva Steenkamp’s cousin took the stand briefly this morning to testify in aggravation of sentence.
Prosecutor Gerrie Nel has dismissed the suggestion that Pistorius should be sentenced to house arrest.