Los Angeles Assistant Chief Coroner Ed Winter said the results of toxicology tests conducted on Michael Jackson's body could be available this week.

The eccentric 50-year-old entertainer died of cardiac arrest June 25 after a suspected prescription drug overdose.

Police have said they will not categorize Jackson's death until after the toxicology reports are completed; however, they are talking to the singer's former doctors about his medical history and drug use.

Winter told Usmagazine.com Monday the results of some of the tests performed to determine what substances Jackson had in his body are already in, while the remaining test results are expected to be available at the end of this week or the beginning of next week.