1.   Defense attorneys long have suggested that evidence was contaminated and perhaps planted before being sent away for testing.

2.   Defense attorneys claim that an army of police tracked through the scene and contaminated evidence.

3.   Further, he said, authorities failed to secure the crime scene, contaminating the evidence.

4.   He also admitted that in hindsight he would have handled evidence differently and that his actions may have contaminated some evidence.

5.   He said the defense was using a common tactic to make the jury question whether the evidence could have been contaminated.

6.   She also attacked the defense theories of a frame-up and contaminated evidence.

7.   You should be angry with forensic personnel, who mishandled and contaminated evidence.

8.   Defense lawyers have repeatedly accused prosecution scientists of contaminating the evidence by mishandling it, arguing that the handling renders the DNA results useless.

9.   Defense attorney Barry Scheck, in his searing cross-examination of police criminalist Dennis Fung, suggested sloppy police detectives contaminated evidence.

10.   Did sloppy investigators contaminate evidence?