This statement was released by Penn State here. Oddly, while mentioning the NAS report, there is no mention of the Congressional commissioned Wegman report, which you can see here full report (PDF). Or for a quick read the fact-sheet (PDF).
University Reviewing Recent Reports on Climate Information
Professor Michael Mann is a highly regarded member of the Penn State faculty conducting research on climate change. Professor Mann’s research papers have been published in well respected peer-reviewed scientific journals.
In November 2005, Representative Sherwood Boehlert (R-NY) requested that the National Academy of Sciences (NAS) convene a panel of independent experts to investigate Professor Mann’s seminal 1999 reconstruction of the global surface temperature over the past 1,000 years. The resulting 2006 report of the NAS panel (http://www.nap.edu/catalog.php?record_id=11676) concluded that Mann’s results were sound and has been subsequently supported by an array of evidence that includes additional large-scale surface temperature reconstructions.
In recent days a lengthy file of emails has been made public. Some of the questions raised through those emails may have been addressed already by the NAS investigation but others may not have been considered. The University is looking into this matter further, following a well defined policy used in such cases. No public discussion of the matter will occur while the University is reviewing the concerns that have been raised.
h/t Joe D’Aleo