TITLE: GCN CIRCULAR NUMBER: 18021 SUBJECT: Fermi GBM trigger 458312518/150711543 is not a GRB DATE: 15/07/12 19:19:49 GMT FROM: Hoi-Fung Yu at MPE Hoi-Fung Yu (MPE) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 458312518/150711543 at 13:01:54.13 UT on 11 July 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is accidental."