TITLE: GCN CIRCULAR NUMBER: 17867 SUBJECT: Confirmation that Swift Trigger 641332 is not astrophysical DATE: 15/05/24 02:31:20 GMT FROM: Hans Krimm at NASA-GSFC H. A. Krimm (CRESST/USRA/GSFC) and C. Gronwall (PSU) report: We conclude that Swift trigger #641332 (Gronwall, et al., GCN Circ. 17862) was the result a noise fluctuation in BAT and is not due to a GRB or other astrophysical event. We have analyzed the BAT data set from T-239 to T+963 sec sec from recent telemetry downlinks. We find that ground analysis results in the significance dropping to 4.1 sigma from T+0 to T+40 s. There is also no significant source in the rapidly available UVOT data.