Oscar Pistorius is due to face a second day of cross-examination by the prosecution at his trial for the murder of his girlfriend Reeva Steenkamp.
During a dramatic first day of questioning by chief prosecutor Gerrie Nel, the South African athlete became distraught as he was shown a graphic photo of Ms Steenkamp after her death.
Pistorius denies murdering Steenkamp.
He says he accidentally killed her after mistaking her for an intruder.
Prosecutors say Pistorius intentionally killed Steenkamp on February 14 last year by firing a gun through a bathroom door at her after a row at his Pretoria home.
The 27-year-old Olympic and Paralympic sprinter, who is a double amputee, faces life imprisonment if convicted of murdering the 29-year-old model, reality TV celebrity and law graduate.
Following legal arguments at the trial in Pretoria on Wednesday, Nel showed video footage of the athlete at a gun range shooting a watermelon.
The chief prosecutor then said the watermelon had exploded in the same way as Steenkamp’s head – and showed the graphic photo. He asked Pistorius to look at it and take responsibility for his actions.
An emotional Pistorius turned away from the image on a monitor screen and said: “I’ve taken responsibility… but I will not look at a picture where I am tormented by what I saw and felt that night… I remember. I don’t have to look at a picture, I was there.”