Scottish Labour leader Wendy Alexander has admitted that she wrote to businessman Paul Green to thank him for his donation to her leadership campaign.
The Jersey-based businessman's gift broke rules which ban contributions from people who are not on the UK electoral register.
Here is the full text of the letter from Ms Alexander, which was dated 5 October.
Dear Paul, I would like to thank you for your generous support for my recent leadership campaign.
I am very grateful to you and I am now honoured and privileged to lead the Labour Party in the Scottish Parliament.
I do believe with all my heart that Scotland is best served by the Labour Party in government and I am truly committed to the promise I made during my campaign that under my leadership Scottish Labour will reform, renew and reconnect with the Scottish people.
We will earn their trust again and get on the road for the journey back to government.
Thank you once again.
Best wishes. Yours sincerely