TITLE: GCN CIRCULAR NUMBER: 40844 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 772647532/250626680 is not a GRB DATE: 25/06/26 17:15:57 GMT FROM: eliza.neights@gmail.com

E. Neights (GWU, NASA GSFC) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:

"The Fermi Gamma-ray Burst Monitor (GBM) trigger 772647532/250626680 at 16:18:47.72 UT on 26 June 2025, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to local particles."

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