J.K. Rowlingis threatening legal action against a fan on social media.

Wizarding News had posted claims that Rowling has an estranged daughter and grandchild, which the author swiftly disputed.

This is untrue in all respects, as I suspect they already know, shewrotein a post.

J. K. Rowling

J.K. Rowling.Karwai Tang/WireImage

Lying about my kids is a new low, even by this websites subterranean standards.

“Your vendetta against me is causing collateral damage to innocent people, she continued.

If legal action is the only way to protect them, I will take it.

Reps for Rowling did not immediately respond to EW’s request for comment.

In another post, they said, Did you know?

JK Rowling is a grandmother.

Have any of you ever seen her talk about grandchildren?

In afollow-up post, Rowling explained why Wizarding News claims were false.

I’ve done everything I can to keep my children out of the public eye, she wrote.

My eldest daughter doesn’t owe you or anyone else details of her private life.

However, for the avoidance of doubt: 1.

Contrary to your claims, we are very close and last talked an hour ago.

We discussed your posts, which have angered and distressed her.

Contrary to your claims, she doesn’t live in Portugal.

Contrary to your claims, she has no children.

You’ve published easily disproven and damaging falsehoods, she continued.

I want a retraction and apology, or we go to lawyers, Rowling wrote in anotherpost.

Wizarding News laterstated, Deleted the post with photos and link to that Instagram hours ago, Jo.

Glad you seem to be self-aware enough that you’re now publicly acknowledging the hate your bigoted rhetoric engenders.

The account apologized to Rowlings daughter for the mistake.