TITLE: GCN CIRCULAR NUMBER: 8942 SUBJECT: Swift-BAT trigger 345396 is not a GRB DATE: 09/03/06 23:19:28 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), on behalf of the Swift-BAT team: The Swift-BAT trigger 345396 (at 13:54:24 UT on 06-Mar-09) (Godet, Circ 8839) is not due to a GRB, nor anything astrophysical. It is due to a comic ray particle shower event in the BAT instrument. There were 105 counts in a single 100 microsec timestamp bin.