It's a sedative called Diprivan, and police searching Michael Jackson's Holmby Hills mansion after his June 25 death found it - along with IV stands and oxygen cylinders - in the home.

Official toxicology results have yet to be released, but preliminary results of Jackson's autopsy showed the anesthetic Propofol - another name for Diprivan - may have played a part in his death.

And authorities specifically were searching for evidence of propofol at the home of Jackson's personal physician, Dr. Conrad Murray, who investigators reportedly believe gave the singer the drug the night before he died. (Murray claims he did not give Jackson any drugs that "should have" led to his death).