TITLE: GCN CIRCULAR NUMBER: 18063 SUBJECT: Fermi GBM trigger 150725291 is not a GRB DATE: 15/07/25 11:16:20 GMT FROM: Oliver Roberts at UCD/Fermi O.J. Roberts (UCD) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 459500385/150725291 at 06:59:41.57 UT on the 25th of July 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to local particles."