secret Iran election letter from IRAN's Minister to Supreme leader

This is a letter which we are not sure about the source and currently spreading in facebook. If it is true, it prooves all the "frauds" about IRAN's election. In this letter, Sadegh Mahsouli wrote to Supreme letter and give him the real statics of IRAN's election. He confirmed that they changed the results according to pre-engineeered request by ayatollah kKhamenei. However, there is not a accurate source for this letter yet.