Dr. Conrad Murray's Defense: Lorazepam Killed Michael Jackson; Not Propofol Dr. Conrad Murray's Defense: Lorazepam Killed Michael Jackson; Not Propofol October 13, 2011GWL Staff Dr. Conrad Murray's legal team disagrees with the finding that Michael Jackson died of acute Propofol intoxication and will tell jurors when they present their case that the King of Pop died of a Lorazepam overdose.