TITLE:   GCN CIRCULAR
NUMBER:  30911
SUBJECT: Swift GRB211001.03 / trigger 1076121 : MASTER OT retraction
DATE:    21/10/01 07:42:35 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>

E. Gorbovskoy, V.Lipunov

MASTER optical candidate to transients sources from GCN 30904 is not astrophysical.