11/29/2011 AT 11:45 AM EST
Dr. Conrad Murray faces up to four years behind bars at his sentencing Tuesday on his manslaughter conviction
for administering a deadly anesthetic to Michael Jackson.
In his sentencing memo, the prosecution contended that Murray, 58, performed a "dangerous, unprecedented pharmaceutical experiment," withheld from paramedics and emergency room doctors that he'd administered propofol, and hid some drugs and equipment after Jackson stopped breathing.
Murray's attorneys, who suggested at trial that the singer caused his own death by taking extra drugs when Murray was out of the room, asked that Murray receive probation.
"There is no question that the death of his patient, Mr. Jackson, was unintentional and an enormous tragedy for everyone affected," the lawyers wrote in their sentencing memo, adding that Jackson's death was "an atypical and isolated aberration to an otherwise exceptional medical career."