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Sept. 29, 2011: Prosecutor David Walgren holds up a 100 ml bottle of propofol at Conrad Murray's involuntary manslaughter trial. Alberto Alvarez, Michael Jackson's former bodyguard, appears near him. He said the bottle was contained inside a saline bag at the scene where he found the singer hours before he was pronounced dead. He said Murray told him to stash the saline bag in another bag, before he instructed him to call 911.
( Photo / OTRC)