Marijuana and numerous empty drug bottles were found by police officers at Michael Jackson's home shortly after he died, according to search warrants unsealed on Thursday.
Two bags of marijuana, a bottle of temazepam (used to treat sleeplessness), empty bottles of the sedatives lorzaepam and diazepam were discovered during the search. They also found four other empty pill bottles with no indication as to what may have been in them.
Detectives were concerned that, when Jackson died, he had "received injection of an unknown medication, prior to his death," the warrants say. Other documents revealed
that Jackson's doctor, Conrad Murray, had been giving the singer the anesthetic propofol intravenously.
The search warrants were served on June 29, four days after the singer was pronounced dead
at UCLA Medical Center, where Murray was less than forthcoming. Murray, according to documents, left the hospital "against the objections of the investigating officers" and they were not able to talk with him in the days that followed.
The warrant also says that, on the day of Jackson's death, as investigators were at the house, "family members of the decedent notified Los Angeles County Coroner's Assistant Chief Ed Winter that they had located a quantity of tar heroin in [Jackson's] bedroom on the second floor of the residence. Winter notified LAPD detectives of the found evidence." There is no mention in the warrant if the evidence really turned out to be heroin.
Winter told PEOPLE on Thursday that he cannot discuss the evidence or say when the results of Jackson's autopsy will be revealed.