TITLE: GCN CIRCULAR NUMBER: 37517 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 748124309/240915846 is not a GRB DATE: 24/09/15 21:02:25 GMT FROM: Bagrat Mailyan at Florida Tech B. Mailyan (Florida Tech) reports on behalf of the Fermi Gamma-ray Burst Monitor Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 748124309/240915846 at 20:18:24.93 UT on 15 September 2024, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to particle activity."