TITLE: GCN CIRCULAR NUMBER: 18204 SUBJECT: Fermi GBM trigger 150826536 is not a GRB DATE: 15/08/26 18:03:50 GMT FROM: Elisabetta Bissaldi at U.Innsbruk/IAPP E. Bissaldi (INFN Bari) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 462286333/150826536 at 12:52:09.54 UT on 26 August 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to local particles."