Michael Jackson's daughter, Paris Jackson, has lashed out against her uncle, accusing him of spreading rumours.

The 14-year-old child of the late singer publically responded to a tweet from Randy Jackson which authenticated a leaked letter from him and siblings Janet, Rebie, Tito and Jermaine that claimed Michael's will was fake.

The note demanded that the Jackson Estate executors John Branca and John McClain resign. The letter also alleged that their mother Katherine Jackson was in bad health and had recently suffered a mini-stroke.

Paris posted on twitter: "I am going to clarify right now that what has been said about my grandmother is a rumour and nothing has happened, she is completely fine. I will defend my beloved family member with all I have, even if it means from other family members."

Katherine's attorney, Perry Sanders, denied that his client was in poor health.

He told TV network CNN: "Mrs. Jackson is extremely lucid and does a great job caring for Michael's children."

Paris sent a new message directed to Randy which read: "@randyjackson8 hello dear FAMILY member i don't appreciate you telling everyone things that aren't true thank you very much."

When one of her followers suggested Paris should have respect for Randy, she replied: "Maybe he should have respect for his mother."

Paris has since deleted the tweets.