The Rev. Jesse Jackson said Saturday that the family wants a second independent autopsy of Jackson's body because of unanswered questions about how he died.

We don't know what happened. Was he injected and with what? All reasonable doubt should be addressed, said Jesse Jackson from Chicago a day after he visited the Jackson's family.

Jesse Jackson described the family as grief-stricken.

They're hurt because they lost a son. But the wound is now being kept open by the mystery and unanswered questions of the cause of death, he said.

Jackson's body was returned to his family on Friday night after an examination by the Los Angeles County coroner's office failed to determine what killed the 50-year-old entertainer, pending toxicology tests that were expected to take weeks.

Los Angeles County medical examiners completed an autopsy Friday and said Jackson had taken prescription medication.

Medical official also said that no evident of external trauma of his body. An official cause of death could take weeks.

There was no immediate word on whether the second autopsy was being performed right away.