Regulators have launched an investigation after a Scottish charity sent an abusive tweet to Harry Potter author JK Rowling.
Rowling was subject to a series of abusive messages on Twitter after she pledged £1m to the 'No' campaign in the Scottish independence referendum.
Among them was a tweet from the Dignity Project saying: "What a b***h after we gave her shelter in our city when she was a single mum" - a reference to Rowling's time in Edinburgh before Harry Potter became a global publishing phenomenon.
The charity's Twitter biography describes it as an organisation working in Africa with "orphans and vulnerable children".
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