Murray, a Texas-based cardiologist who was at Jackson's rented home in Holmby Hills when the pop star died on June 25, allegedly gave Jackson the anesthetic propofol -- commonly known as Diprivan -- in the 24 hours before his death, a source with knowledge of the investigation said.
However, doctor's attorneys in a statement said they wouldn't comment on "rumors, innuendo or unnamed sources."
Murray's lawyer, Ed Chernoff, insists that his client did not prescribe or administer anything that could have killed Jackson.
Chernoff said that Murray was "the last doctor standing when Michael Jackson died and it seems all the fury is directed toward him. Dr Murray is frustrated by negative and often erroneous media reports, he has to walk around 24-7 with a bodyguard. He can't operate his practice. He can't go to work because he is harassed no matter where he goes."
From Murray's storage unit, authorities removed two computer hard drives, an "important contact list", a suspension notice from Houston's Doctor Hospital, notices from the Internal Revenue Service; and a laundry list of medical and hospital documents.
Police have interviewed Murray twice since Jackson's death. A third interview was scheduled for July 24, but was postponed after the search warrants were executed. It is still not known when the next interview will take place.
Deccan Herald is on WhatsApp Channels| Join now for Breaking News & Editor's Picks