Drug Enforcement Agency officers found dozens of bottles, boxes and bags of pills while searching the property in Holmby Hills where Jackson died, reports the Daily Star.
Among other drugs they seized the highly dangerous surgical anesthetic Propofol, which is legally available only to hospital patients and is administered via intravenous injection.
Propofol comes under the list of drugs found under the trade name Diprivan.
According to experts, without proper monitoring, the drug could lead to cardiac arrest, which ultimately caused Jackson's death.
One LA-based doctor described the astonishing cache of drugs as a "guaranteed cocktail of death".
It included the potent painkillers Demerol and OxyContin.