Source: ‘Tar Heroin’ Listed in Jackson Warrant Not Heroin

A source tells ET that the "tar heroin" found in Michael Jackson's rented home, as listed in a search warrant, was not heroin -- but was rancid marijuana.

One of the newly unsealed warrant 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 bag in the decedent's bedroom located on the 2nd floor. Chief Winter notified LAPD detectives of the found evidence."

Entertainment Tonight convinced the court in Los Angeles on Thursday to release two more search warrants in the Michael Jackson investigation.