Investigators found dozens of bottles, boxes and bags of pills while searching the property in Bel Air where Jackson died. Among other drugs, the highly dangerous surgical anaesthetic Diprivan, which is legally available only to hospital patients and is administered via intravenous injection, was also seized.
Winter said a determined cause for the star's death may just be around the corner.
"Hopefully we'll have something to report at the end of next week. We're still on track," the New York Daily News quoted him as saying.