Propofol became the focus of the Dr. Conrad Murray involuntary manslaughter trial once more when testimony resumed Wednesday afternoon.

The investigator who inspected Michael Jackson's room on the day he died, Elissa Fleak, testified that she found a large pill collection next to the King of Pop's bed (shown above).

Among the pills were the sedatives Diazepam, Lorazepam and Temazepam. Fleak also found a blue bag stuffed with Propofol. Last week, Jackson's bodyguard Alberto Alvarez testified that Murray had asked him to put the vials in that pack, and he complied before 911 was called.