There’s more today on those devastating internal documents from the Heartland Institute; Heartland has confirmed that they were mistakenly emailed by a staff member.

The Heartland Institute has confirmed in a prepared statement that it mistakenly emailed its board materials to an anonymous third party - confirming the source of the documents released here on the DeSmogBlog yesterday.

Heartland then goes on allege that one of the documents (the Climate Strategy) is a fake.

The DeSmogBlog has reviewed that Strategy document and compared its content to other material we have in hand. It addresses five elements:

The Increased Climate Project Fundraising material is reproduced in and confirmed by Heartland’s own budget.

The “Global Warming Curriculum for K-12 Classrooms” is also a Heartland budget item and has been confirmed independently by the author, Dr. David Wojick.

The Funding for Parallel Organizations; Funding for Selected Individuals Outside Heartland are both reproduced and confirmed in the Heartland budget. And Anthony Watts has confirmed independently the payments in Expanded Climate Communications.

The Heartland Institute is obviously very embarrassed by this leak, and now they’re threatening prosecution, claiming the documents are fake, and demanding that the Internet erase any record of the whole thing, issue retractions, and forget about it.

Good luck with that.

We respectfully ask all activists, bloggers, and other journalists to immediately remove all of these documents and any quotations taken from them, especially the fake “climate strategy” memo and any quotations from the same, from their blogs, Web sites, and publications, and to publish retractions.

The individuals who have commented so far on these documents did not wait for Heartland to confirm or deny the authenticity of the documents. We believe their actions constitute civil and possibly criminal offenses for which we plan to pursue charges and collect payment for damages, including damages to our reputation. We ask them in particular to immediately remove these documents and all statements about them from the blogs, Web sites, and publications, and to publish retractions.

How did this happen? The stolen documents were obtained by an unknown person who fraudulently assumed the identity of a Heartland board member and persuaded a staff member here to “re-send” board materials to a new email address. Identity theft and computer fraud are criminal offenses subject to imprisonment. We intend to find this person and see him or her put in prison for these crimes.