Michael Jackson's personal physician stopped resuscitation efforts on the dying star and delayed calling 911 in order to collect drug vials at the scene, according to documents obtained by the Associated Press.

The explosive allegation that Dr. Conrad Murray may have tried to hide evidence is likely to be a focus as prosecutors move ahead with their involuntary manslaughter case against him.

The account was given to investigators by Alberto Alvarez, Jackson's logistics director, who was summoned to the stricken star's side as he was dying on June 25. Two other Jackson employees, who also gave statements to the police, were also present at the scene.

Alvarez said he saw Jackson lying in bed, with eyes open, and there was no sign of life. Murray worked frantically, at one point performing mouth-to-mouth resuscitation while Alvarez took over CPR.

Murray's lawyer rejected the claim that his client tried to hide drugs, adding that Alvarez was interviewed twice by police and gave different accounts of what happened in Jackson's bedroom.