TITLE: GCN CIRCULAR NUMBER: 22737 SUBJECT: Fermi GBM trigger 548829437/180524192 is not a GRB DATE: 18/05/25 00:53:15 GMT FROM: Matthew Stanbro at UAH/Fermi M. Stanbro (UAH) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 548829437/180524192 at 04:37:12.98 UT on 24 May 2018, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity."