"I approached the house, there were security officers also there. After I'd gone through, on the left-hand side of the stairs there was a body.
"The body was covered with towels and black bags and there was blood which could be seen there."
The colonel said a female paramedic told him the woman had been declared dead on their arrival.
"The paramedic showed me there was a head wound, a wound on the right hand side of the waist, a wound on the right arm above the elbow," Schoombie van Rensburg said.
"In the kitchen, there stood the accused, a white male who was made known to me as Oscar Pistorius. He was very emotional at that stage and then I asked him what happened. He didn't answer. He was in tears."
The photographs showed spots of blood on the floor and the walls of Pistorius' stairs and hallway. In the bedroom an empty gun holster lay to the left-hand side of the bed, the implication being that this was where Pistorius removed the gun.
He claims he believed Steenkamp to still be sleeping.
Other pictures showed deep pools of blood on the bathroom floor, and large parts of the demolished door.
The police colonel found the gun lying on top of a grey towel. "The hammer was back," he said. "It was cocked and ready to go."
Prosecutors argue Pistorius, 27, intentionally shot and killed his girlfriend after a domestic dispute. If convicted of murder he will almost certainly receive a life sentence, with a minimum term of 25 years.
- Independent