beautiful 29-year-old cover girl was shot to death. the double amp amputee says he mistook her for an intruder when he shot her through the bathroom door. they found a large pool of blood near the bathroom toilet and two police markers that appear to indicate bullet holes below the door handle. they say it backs up the runner's claim that he wasn't wearing his prosthetic legs when he shot steenkamp. but others say those photos are inconclusive. >> it's very difficult to assess crime scene photographs when you have an incomplete set. >> reporter: police say they don't know the origin of the photos and some of them may be incriminating. this picture shows bloody shoe footprints, proof according to critics, that the crime scene was tainted. the former lead investigator previously admitted police had walked through the crime scene without wearing protective foot covers. >> i would be surprised if it was enough to cause a judge to throw out the case.