Oscar Pistorius broke down as he recalled finding his girlfriend Reeva Steenkamp in the toilet after shooting at the door.
The judge ordered to the court to adjourn until tomorrow to allow the athlete to regain his composure.
Pistorius, who denies murder, claims he shot Steenkamp by mistake through the toilet door at his house, thinking she was an intruder.
A cross-examination of Oscar Pistorius ended with the prosecutor in the murder trial giving a stark summary of how he shot his girlfriend.
On another intense day of questioning, prosecution lawyer Gerrie Nel accuses Oscar Pistorius of "tailoring his evidence".
One of South Africa's top attorneys said it was beyond belief that Reeva Steenkamp would have remained silent with Pistorius shouting.