TITLE: GCN CIRCULAR NUMBER: 19432 SUBJECT: Fermi GBM trigger 485205628 /160517806 is not a GRB DATE: 16/05/17 20:01:31 GMT FROM: Bagrat Mailyan at UAH B. Mailyan (UAH) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 485205628/160517806 at 19:20:24.46 UT on 17 May 2016, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity."