TITLE: GCN CIRCULAR NUMBER: 17887 SUBJECT: Fermi GBM trigger 150529948 is not a GRB DATE: 15/05/30 00:44:26 GMT FROM: Peter Jenke at MSFC P. Jenke (UAH) reports on behalf of the Fermi GBM team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 454632311/150529948 at 22:45:08.02 UT on the 24th of May 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to local particles.”