Last week, a nutritionist -- Cherilyn Lee -- said Jackson pleaded for the drug despite being told of its harmful effects, because he had difficulty falling asleep.

CNN: Sources: Jackson showed signs of IV drug use

Among others who have indicated that Jackson may have been using dangerous prescription medication are a nutritionist, Cherilyn Lee, who said Jackson pleaded for Diprivan despite being told of its harmful effects.

CNN: Portrait of Jackson's pill consumption emerges