Conrad Murray Trial Day 8: Defense Takes One Step Forward, Two Steps Back [AUDIO/PHOTOS]

MICHAEL JACKSON TRIAL DAY 8: Dr. Conrad Murray's legal team finally poked some holes in the prosecution's case yesterday, but the victory was short-lived.

The defense suggested a coroner's investigator made "substantial mistakes" when she searched Michael Jackson's bedroom after his death and that she has made significant changes in her testimony since the preliminary hearing last January. Defense attorney Ed Chernoff contends that things had been moved in the room and said investigator Elissa Fleak didn't note that she had found a bottle of propofol inside an IV bag until March 2011, almost two years after Jackson's death. Fleak admitted that she had not conducted a perfect investigation

LISTEN: Dr. Conrad Murray's defense team going after an investigator from the L.A. County Coroner's office ( From FoxNews.com) ...

But their small victory was short-lived when It was revealed MICHAEL JACKSON'S fingerprints were not found on any of the bottles of propofol or other medical evidence collected from Michael's bedroom after his death. This is big because the defense claims Michael administered the deadly dose of propofol to himself. But prosecutors noted a print from one of Dr. Murray's index fingers was found on a vial of propofol next to Michael's bed.

RELATED: Conrad Murray Trial Day 7: More Audio of a Drugged, Slurring Michael Jackson Played [VIDEO/AUDIO]