Latest: Michael Jackson’s Cause of Death to be Announced Friday

ET has learned that the Los Angeles County Coroner's office will announce the cause and manner of Michael Jackson's death on Friday morning.

A press conference is not expected, but rather a paper statement will be released. This comes on the heels of the unsealing of two more search warrants on what police found in both Michael Jackson’s rented home and the abandoned car connected to his former personal physician, Dr. Conrad Murray.

One of the warrants says: "During the course of the investigation, family members of the decedent notified L.A. County Coroner's Assistant Chief Winter, that they had located a quantity of tar heroin in a bad in the decedent's bedroom located on the 2nd floor. Chief Winter notified LAPD detectives of the found evidence"