Paris Jackson is Michael Jackson's daughter with ex-wife Debbie Rowe

Paris Jackson has directed a series of angry Tweets to members of her family after they alleged that her 82-year-old grandmother Katherine had suffered a mini-stroke.

Randy, Jermaine, Tito, Janet and Rebbie Jackson made the claim in a letter that demanded a change to who's an executor of her dad Michael's estate.

'I am going to clarify right now that what has been said about my grandmother is a rumor and nothing has happened, she is completely fine,' Tweeted Paris, 14.

'i will defend my beloved family member with all i have , even if it means from other family members.

'at this point i dont care what people call me or if they think i'm a bad person... if it means sticking up for my grandmother i will do it.'

Katherine has looked after Paris and her two brothers Prince, 15, and Blanket, 10, since Michael's death at the age of 50 in 2009.

But Randy, 50, is sticking by the family's claims.

'Yes, the letter is authentic,' he's Tweeted.

'We ask that everyone respects that this is a serious matter that will be handled by the proper authorities.'

Paris has now removed some of her Tweets.

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Anna Duff