Last week, Michael Jackson's father, Joe, was laid to rest at a funeral service attended by his famous family.
While Joe Jackson was the brain behind the hit pop group The Jackson 5, his children also spoke openly about his abusive behavior.
Now, the doctor who was found guilty of causing Michael Jackson's death claims the star's abuse at Joe's hands was worse than anyone knows.
Who is Conrad Murray?
While he lives a quiet life today, just a few years ago Dr. Conrad Murray was one of the most controversial people in America.
He was hired to be Michael Jackson's private doctor after treating one of Jackson's children at his Nevada clinic.
Murray, who was reportedly paid $150,000 a month to treat the star, was the first to prescribe him the anesthetic propofol.
Propofol is a powerful medicine that Murray was administering to Jackson as a sleep aid - despite the fact that the drug is not meant to be used outside of a hospital or clinic.
A Los Angeles coroner ruled that the final dose of propofol Murray gave to Jackson was what caused the star's death, and the doctor was convicted of involuntary manslaughter.
Murray was sentenced to four years in jail but only served two. His medical licenses in three states either expired or were revoked.
He later went on to write a tell-all book, This Is It!: The Secret Lives of Dr. Conrad Murray and Michael Jackson.
Explosive claims about Joe Jackson
After Joe Jackson was laid to rest last week, his famous grandchildren had nothing but positive things to say about him.
"Proud to have your strength and share the dynasty you spent your life creating, and proud to be a Jackson," Michael's daughter Paris wrote in an emotional Instagram post.
"This man is and always will be an example or sheer willpower and dedication," Michael's son Prince wrote in his own tribute.
"He didn't choose the path that was the easiest but he chose the path that was best for his family."
But Murray had nothing nice to say about Joe Jackson in a angry video rant released by The Blast.
Murray called the Jackson patriarch "one of the worst fathers to his children in history."
He also claimed that Michael had "many sufferings at the hands of his father."
But Murray's most outrageous claim of all surprised viewers:
"The fact that [Michael] was chemically castrated to maintain his high-pitched voice is beyond words."
A history of abuse
This isn't the first time that Murray has claimed Michael Jackson was chemically castrated by his father.
In This Is It!, he accused Joe of giving his son hormone injections at age 12, both to preserve Jackson's high-pitched voice and to cure his acne.
"[Jackson] began talking vaguely, seeming to have more difficulty describing precisely what happened to him," Murray wrote.
"But what Michael said left me the impression that he had been given injections, probably some hormones, to delay his puberty."
It should be noted that Joe Jackson once filed a wrongful death lawsuit against Murray, but later dropped the case.
And while the singer never publicly confirmed such rumors, he did speak openly about his father's abusive behavior.
In the documentary Living With Michael Jackson, the pop star revealed that his father was a "strict disciplinarian."
"It was more than just a belt "” cords, whatever was around," Jackson told Oprah Winfrey in another interview, referring to his father's physcial abuse.
"[He'd] throw you up against the wall as hard as you could," he remembered.
"He would lose his temper. ... I was so fast, he couldn't catch me half the time. But when he would catch me? It was bad. It was really bad."
The singer even confessed that, as a child, just seeing his father was stressful enough to make him vomit.
"He raised these kids right."
So far the Jackson family have not responded to Murray's claims, except for a fiery response by the singer's son, Prince Michael.
In a since-deleted rant on Instagram, the pop star's child addressed claims that Joe Jackson was an abusive parent.
"But he raised these kids right, otherwise they would have been in gangs or [dead]," Prince insisted.
Still, Murray seems to have no doubts in his mind about Joe Jackson in his viral video.
"I would not shed a single tear for the passing of this cruel and evil man," Murray said.
"It is said that only the good die young ... I hope Joe Jackson finds redemption in hell."
Read more celebrity stories:
- Notorious Hollywood detective says the truth about Michael Jackson is worse than anyone knows.
- Halle Berry shows her son's face for the first time, reveals why she hid it for so long.
- The touching reason why Arnold Schwarzenegger and Maria Shriver never divorced.