TITLE: GCN CIRCULAR NUMBER: 36920 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 743271526/240721680 is not a GRB DATE: 24/07/22 00:01:07 GMT FROM: Cori Fletcher at USRA C. Fletcher (USRA) reports on behalf of the Fermi Gamma-ray Burst Monitor Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 743271526/240721680 at 16:18:41.10 UT on 21 July 2024, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to particle activity."