LOS ANGELES, Aug. 27 (Xinhua) -- Relatives of Michael Jackson told the authorities they had found what they believed to be tar heroin in the singer's bedroom, according to search warrants released on Thursday.
"During the course of the investigation, family members of the decedent notified Los Angeles County Coroner's Office (Assistant) Chief (Ed) Winter that they had located a quantity of tar heroin in a bag in the decedent's bedroom located on the second floor of the residence," Los Angeles police detective Orlando Martinez wrote in the search warrant affidavit.
But when police searched the house, they found only two baggies of marijuana, the warrant said.
Meanwhile, both TMZ.com and the Los Angeles Times quoted unnamed sources saying that the material found by Jackson's family was tested and turned out not to be heroin. The paper also reported that heroin was not found in Jackson's system.
According to the court documents, only Jackson and his children were permitted on the second floor of the house where the "heroin" was found, Martinez wrote in the warrant.
Police also found empty bottles of Lorazepam and Diazepam, a baggy with a medical label and the name Dr. Conrad Murray, two empty packs of cigarettes and four empty pill bottles.
According to a separate search warrant released in Houston, the Los Angeles County Coroner's Office determined that Jackson had a lethal level of the powerful sedative propofol in his system.
Jackson's doctor Conrad Murray told investigators that he had given Jackson the drug early the morning of his death, according to a earlier warrant.
He said he had given him the medication in the past, but was trying to wean him off of the drug, fearing that he was developing an addiction.
Murray said he gave Jackson a series of medications over the course of that night because the singer could not sleep.
According to the affidavit, Jackson repeatedly demanded the propofol, which he referred to as his "milk" and Murray finally agreed.
Investigators are trying to determine if charges are warranted against Murray or other doctors who may have prescribed or administered the medication, which is usually used only in hospitals during surgery.
Jackson died on June 25 at his rented Holmby Hills mansion in Los Angeles at the age of 50, just days before he was to perform a series of concerts in London.