TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3664 SUBJECT: Swift-BAT trigger 147325 is not due to a real GRB DATE: 05/07/23 14:31:01 GMT FROM: Scott Barthelmy at NASA/GSFC S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), N. Gehrels (GSFC), C. Markwardt (GSFC/UMD), D. Palmer (LANL) on behalf of the Swift-BAT team: The Swift-BAT trigger at 11:17:49 UT(trigger=147325, referred to in GCN 3663, Moretti et al) is not due to a real GRB. It is due to a cosmic ray shower event in the material of the spacecraft. All 90-some events are simultaneous in the BAT detector.