Pistorius murder trial on 10th day
14 March 2014 Last updated at 14:06 GMT
The trial of Oscar Pistorius is now in its 10th day, More than 100 witnesses are expected to be called during the trial.
The state is seeking to convince the court that Mr Pistorius and Ms Steenkamp - a 29-year-old model, reality TV star and law graduate - had an argument before the athlete fired the shots that killed her.
The court has been hearing from the head of police who took charge of the crime scene.
Africa correspondent Andrew Harding was at the court in Pretoria.