The judge in the Oscar Pistorius murder trial says she will give her verdict on September 11.

Judge Thokozile Masipa confirmed the date after the prosecution and defence teams today ended their final arguments in the murder case against the double-amputee, who shot dead girlfriend Reeva Steenkamp on Valentine's Day last year.

Pistorius said he mistakenly shot Ms Steenkamp, thinking there was an intruder in his home. The prosecution alleges the Olympic runner intentionally killed her after an argument.