Prosecutors say the South African Paralympic sprinter Oscar Pistorius will be indicted for premeditated murder on Monday and he will go on trial in early 2014 for shooting dead his girlfriend, Reeva Steenkamp, on 14 February this year.

National prosecuting authority spokesman Medupe Simasiku said the exact date for the trial has not yet been set and will probably be decided on Monday, the Paralympian's next appearance in court.

Simasiku declined to comment on South African media reports that charges will be added in relation to Pistorius allegedly discharging a firearm recklessly in two other incidents.

But Simasiku said the main charge on the indictment would "definitely" be premeditated murder, meaning Pistorius would face a life sentence with a minimum of 25 years in prison if convicted on that charge.

Pistorius denies the charge of murder.