TITLE: GCN CIRCULAR NUMBER: 17927 SUBJECT: Fermi GBM trigger 150615574 is not a GRB DATE: 15/06/15 14:59:34 GMT FROM: Andreas von Kienlin at MPE A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 456068761/150615574 at 13:45:58.47 UT on the 15th of June 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to distant particles."