An official from the L.A. County Coroner's office is in the offices of Michael Jackson's former nurse -- the nurse who claims Jackson badgered her for a powerful anesthesia.
Assistant Chief Coroner Ed Winter just left nurse Cherilyn Lee's office ... he walked out with Jackson's medical records.
We asked Lee about Jackson's use of the drug Propofol -- she says he asked her for it but she never gave it to him.
Winter retrieved files from Dr. Arnold Klein last week.
UPDATE: Winter has left the building with medical records. He said Lee was cooperative and is not under investigation.
UPDATE: We spoke with Lee after Winter left -- she says she thought she'd convinced Jackson not to take Diprivan, he was feeling good and a great father figure.
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