TITLE: GCN CIRCULAR NUMBER: 19543 SUBJECT: Fermi GBM trigger 487974449/160618852 is not a GRB DATE: 16/06/19 00:35:08 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 487974449/160618852 at 20:27:25.80 UT on 18 June 2016, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to a SGR."