TITLE: GCN CIRCULAR NUMBER: 19068 SUBJECT: Fermi GBM trigger 477460274/160218161 is not a GRB DATE: 16/02/24 08:41:53 GMT FROM: Hoi-Fung Yu at MPE H.-F. Yu (MPE) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 477460274/160218161 at 03:51:10.08 UT on 18 February 2016, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity."