White House deleted e-mails during investigation

As Josh Marshall notes, the New York Daily News reports this interesting bit relating to the investigation into the leaking of CIA operative Valerie Plame's classified identity:

Fitzgerald, who is fighting Libby's request, said in a letter to Libby's lawyers that many e-mails from Cheney's office at the time of the Plame leak in 2003 have been deleted contrary to White House policy.

At this point, there's no way of knowing if those e-mails were deleted for purposes of covering anything up, but it certainly should raise some eyebrows.