TITLE:   GCN CIRCULAR
NUMBER:  28818
SUBJECT: Swift Trigger 1003313 (a.k.a. GRB 201031A) is not an astrophysical event
DATE:    20/10/31 23:36:27 GMT
FROM:    Amy Lien at GSFC  <amy.y.lien@nasa.gov>

A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC),
S. Laha (GSFC/UMBC/CRESST), A. Tohuvavohu (U Toronto)
report on behalf of the Neil Gehrels Swift Observatory Team:

Further analysis of Swift trigger 1003313 (previously reported
as GRB 201031A; Laha et al., CGN Circ. 28814) using
the data set from T-60 to T+243 sec shows that
the BAT image significance has now decreased to 2.6 sigma
(15-350 keV). Also, the mask-weighted light curve does not
show anything significant.

We thus conclude that this event is due to noise,
and is not an astrophysical event.