The pictures, shown on the British news channel, show a bathroom, with blood on the toilet seat and a door with two marked bullet holes.
There was also a pool of blood on the floor next to the toilet seat. The two bullet holes are located just below the door handle.
The 26-year-old athlete claims that he shot his lover, Reeva Steenkamp, through a locked bathroom door after mistaking her for an intruder.
Lawyers for the double amputee known as “Blade Runner” have written to the country’s prosecution authority to complain about the leaked pictures.
“I can confirm that I have written to the National Prosecution Authority PA,” attorney Brian Webber told AFP, refusing to give details.
Sky News has not revealed how it got hold of the graphic images, the first to emerge of the crime scene.