The daily said it had obtained documents from the United States and the European Parliament which "show that that plane flew several times to Guantanamo, Cuba, presumably to transfer terrorism suspects." It said the European Parliament was investigating the private Grumman Gulfstream II, registered by the European Organization for the Safety of Air Navigation, for suspected use in CIA "rendition" flights in which prisoners are covertly transferred to a third country or US-run detention centers.
Last October, the Austin American Statesman reported the plane had previously flown to Guantanamo Bay.
Here's a Chicago Public Radio story from October 31, 2007 about the crashed CIA drug plane.
Mad Cow visited Donna Blue's offices and took photos of what appears to be a sham company. Here's a photo of some unmarked police cars parked in front Donna Blue Aircraft's empty suite: