Credit:
The report says that three letters were sent out late Friday - to Google, AT&T and Apple - seeking answers as to whether AT&T was involved in the rejection, and whether Apple had approved any other Google apps. The letters also reference two pending investigations into wireless open access and exclusive deals between carriers and handset manufacturers (eg. Apple and AT&T).
BusinessWeek's Arik Hesseldahl grabbed the full letters from the FCC website and posted them to Scribd: they're embedded below.
Letter to Apple
Letter to AT&T
Letter to Google