PRETORIA, South Africa -- Displaying photographs of a bare-chested Oscar Pistorius standing in his garage on bloodied prosthetic legs and wearing shorts soaked in his girlfriend's blood, prosecutors attempted Friday to focus attention on the killing for which the double-amputee Olympian is on trial for murder while the defense poked holes in the police investigation that followed it.

The photos were taken in Pistorius' Pretoria home by police soon after he shot Reeva Steenkamp before dawn on Feb. 14, 2013.

Pistorius was seen from the front in the first photo shown in court, his chest clean of blood while he stood on limbs stained up to the knees.

A second image put up on video monitors in the courtroom was taken from Pistorius' left, showing a smear of blood not far from a tattoo of a biblical verse on his back.

He had shot his girlfriend about an hour earlier.

Pistorius was a celebrated track runner who rose from the hardship of having his legs amputated as a baby to compete at the London Olympics. He now faces 25 years to life in prison if convicted of premeditated murder.

The prosecution says Pistorius, 27, killed Steenkamp, 29, intentionally after a loud fight. The athlete maintains he shot her with his licensed 9 mm pistol by mistake, thinking she was an intruder in his bathroom.

While prosecutors have re-created the bloody crime scene and Pistorius' physical condition through a sequence of photographs over two days in court, Pistorius' chief defense lawyer, Barry Roux, embarked on a minute examination of what he contends is major police bungling in the hours, days and even months after the shooting.

Roux said that officers moved evidence and disturbed the scene at the home, and failed to wear proper forensic clothing while picking through it. Police concede they kept the most crucial object -- the wooden toilet cubicle door through which Pistorius shot Steenkamp -- in a body bag in an office and that some of the fragments of wood disappeared.

Defense experts said they have also found key marks in the door that were not identified by police.

A former police colonel, one of the first on the scene, also testified Friday that he had to have police forensic experts frisked and their bags and cars searched after one of a collection of nine expensive watches in Pistorius' bedroom disappeared. G.S. van Rensburg said he opened a case of theft.