An Edinburgh-based charity linked to a tweet criticising JK Rowling after she donated £1 million to the No to Scottish independence campaign said its account was hacked.
The Harry Potter author pledged support for the Better Together camp and wrote a blog detailing "serious risks" of independence.
Criticism of the author quickly flooded Twitter, with one tweet from Edinburgh-based charity the Dignity Project reading: "What a #bitch after we gave her shelter in our city when she was a single mum."
However the Dignity Project, which describes itself as an African Child Education Programme, said it was not behind the tweet, which remains on its account.
Its website stated:"The Dignity Project has had its Twitter account hacked.
"We are not responsible for any tweets that have been sent."
Speaking on her website about her decision to donate £1 million to a keep Scotland in the United Kingdom campaign, JK Rowling said:
My hesitance at embracing independence has nothing to do with lack of belief in Scotland's remarkable people or its achievements.
The simple truth is that Scotland is subject to the same 21st century pressures as the rest of the world.
The more I listen to the Yes campaign, the more I worry about its minimisation and even denial of risks.
I wanted to write this because I always prefer to explain in my own words why I am supporting a cause and it will be made public shortly that I've made a substantial donation to the Better Together campaign.
J K Rowling has donated £1 million to the campaign to keep Scotland in the United Kingdom, Better Together has confirmed.
Harry Potter author JK Rowling has said it is "painful" to know that her mother never knew about her writing success.
Rowling said she was beset with "guilt and worry and anxiety" when her mother Anne was diagnosed with multiple sclerosis, a disease which led to her death in 1990.
Speaking on Radio 4's Woman's House, she said she regretted her mother not being around to see the books become bestsellers.
"She never knew about Harry Potter - I started writing it six months before she died, so that is painful. I wish she'd known."
Harry Potter creator JK Rowling is turning sports writer to pen a series of match reports from the fictional Quidditch World Cup.
The writer's fans will be able to read regular updates from the tournament, which first featured in her books about the teenage wizard, on the Pottermore website.
Quidditch - a fictional sport played by the student wizards on flying broomsticks in the best-selling books - is so popular with fans that they have adapted a version of the game that can really be played. Characters from the books are expected to feature in the reports.
JK Rowling will publish her second crime novel this summer.
'The Silkworm' sees private detective Cormoran Strike hunting the murderer of a novelist.
It is due to be published on June 19.
JK Rowling has admitted what many Harry Potter fans have long suspected - lead characters Harry Potter and Hermione Granger should have ended up together.
Granting a rare interview to Wonderland magazine, the author spoke candidly to Emma Watson, the actress who played Hermione, who was also guest editing the publication.
In an extract from this week's issue, printed in The Sunday Times (£), the author said:
"I wrote the Hermione/Ron relationship as a form of wish fulfilment. That’s how it was conceived, really. For reasons that have very little to do with literature and far more to do with me clinging to the plot as I first imagined it, Hermione ended up with Ron.”
She went on: "I know, I’m sorry, I can hear the rage and fury it might cause some fans, but if I’m absolutely honest, distance has given me perspective on that. It was a choice I made for very personal reasons, not for reasons of credibility."
Rowling even suggested that Hermione and Ron Weasley would have ended up in relationship counselling.
“Am I breaking people’s hearts by saying this? I hope not,” Rowling added.
JK Rowling has announced Harry Potter will return - but this time it will be on the stage.
The author said she is working on a stage play that explores the boy wizard's early years under the Dursleys' staircase.
Although she will not script the play herself, Rowling will co-produce the project with theatre producers Sonia Friedman and Colin Callender.
Rowling said: "Over the years I have received countless approaches about turning Harry Potter into a theatrical production.
"But Sonia and Colin's vision was the only one that really made sense to me, and which had the sensitivity, intensity and intimacy I thought appropriate for bringing Harry's story to the stage."
Author J K Rowling has said that she is more proud of her time as a single mother than any other part of her life and called on politicians to do more to support struggling single parents to get back in to work.
Writing for Gingerbread, a charity which supports single parents that she is a patron of, she said finds: "the language of ‘skivers versus strivers’ particularly offensive when it comes to single parents."
Rowling wrote: "I would say to any single parent currently feeling the weight of stereotype or stigmatization that I am prouder of my years as a single mother than of any other part of my life.
"Yes, I got off benefits and wrote the first four Harry Potter books as a single mother, but nothing makes me prouder than what Jessica told me recently about the first five years of her life: ‘I never knew we were poor. I just remember being happy.’"
Rowling became a single parent on benefits after her marriage ended after the birth of her first daughter Jessica and she struggled to find work after returning to the UK from Portugal.
JK Rowling is to make her screenwriting debut for a Harry Potter spin-off film based on a minor character in the series.
Fantastic Beasts and Where to Find Them will feature fictitious author Newt Scamander, writer of the Hogwarts textbook of the same name.
Rowling made the decision when she was asked by Warner Bros for permission to create the film.
She said: "As I considered Warners' proposal, an idea took shape that I couldn't dislodge. That is how I ended up pitching my own idea for a film to Warner Bros."
It's not the only project the author has taken on since completing the Potter series - Rowling has since released two novels.