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."