The investigating officer said that unlicensed .38 handgun ammunition was found in Oscar Pistorius' house.
It was previously reported that an unlicensed handgun had been found, but this is not the case.
The officer called for Pistorius to face addition charges for possessing the ammunition, and not a gun.
More top news
A man from China has set a rather unenviable new world record - by covering himself in more than 1.1 million bees, weighing 17st.
Chinese goalkeeper Sui Weijie has been fined 50,000 yuan (£5,240) after allowing an opponent to score while he sipped on a bottle of water
A "caring and loving" teenage boy who "lit up the life" of everyone he met has died in hospital after taking what he thought was ecstasy.