The Prosecutor's submission led to the indictment of Oscar for the murder and the court has set trial to run from March 3-20, 2014.
While the blade-runner insists he shot at who he thought was an intruder, the prosecutor said it was premeditated and he had shot to kill his girlfriend following an argument.
According to the prosecutor's case, witnesses reported hearing a female scream from inside the house followed by some gun shots and then silence.
The case is attracting wide media coverage.
Ms. Steenkamp, a model and reality TV star would have celebrated her 30th birthday today.