TITLE: GCN CIRCULAR NUMBER: 23592 SUBJECT: Fermi GBM trigger 567868083/181230547 is not a GRB DATE: 18/12/30 14:46:35 GMT FROM: Elisabetta Bissaldi at INFN,Bari E. Bissaldi (Politecnico & INFN Bari) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 567868083/181230547 at 13:07:58.59 UT on 30 December 2018, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity."