TITLE: GCN CIRCULAR NUMBER: 18417 SUBJECT: Fermi GBM trigger 466316973/151012187 is not a GRB DATE: 15/10/12 12:34:59 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 466316973/151012187 at 04:29:29.04 UT on 12 October 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity."