TITLE: GCN CIRCULAR NUMBER: 40733 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 771704505/250615765 is not a GRB DATE: 25/06/15 19:29:24 GMT FROM: rhamburg@usra.edu R. Hamburg (USRA) reports on behalf of the Fermi Gamma-ray Burst Monitor Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 771704505/250615765 at 18:21:40.49 UT on 15 June 2025, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to solar flare."