Witness Says Michael Jackson Caused His Own Death

Conrad Murray's attorneys finally got some expert testimony to back up their claim that Michael Jackson caused his own death.

According to the Associated Press, Dr. Paul White, the defense's key scientific witness, said that Jackson injected himself with another dose of propofol after Dr. Murray's initial dose wore off. He also deduced that Jackson took lorazepam pills in addition to the other drugs that Murray used to help the singer sleep, a combination that could have had "lethal consequences." White came to that conclusion after finding a miniscule amount of lorazepam residue in Jackson's stomach.

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White gave jurors a series of charts and simulations he created in support of his theory and even demonstrated of how the drug in question could've entered Jackson's bloodstream. He also believed Murray's statement that he gave Jackson 25 milligrams of propofol after hours of unsuccessful attempts at putting the singer to sleep.

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White added that Murray's dose would have only lasted about 10-15 minutes max in Jackson's central nervous system and suggested that the singer could have injected another 25 milligrams, which could have been the fatal dose. "So you think it was self-injected propofol between 11:30 and 12?" asked defense attorney J. Michael Flanagan. "In my opinion, yes," White replied.

White's testimony comes just days after his longtime colleague and collaborator Dr. Steven Shafer said otherwise, commenting that Jackson would have been too befuddled to self-administer another dose. The fact that there weren't any witnesses and physical evidence during the time Murray left Jackson unattended has become the key factor in the case.

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The prosecution was set to question White during cross-examination but had to ask for recess due to needing more time to study the computer program he used in his demonstration. Jurors who were expecting the trial to be over this week had the judge come to their aid for the delay, but the jurors offered no complaints when they learned that things will carry over to Monday.

Conrad Murray has pleaded not guilty to involuntary manslaughter and could face up to four years in prison if convicted as well as lose his medical license. Check back with ET for continuous coverage of the Michael Jackson death trial.