TITLE: GCN CIRCULAR NUMBER: 10574 SUBJECT: IBAS Alert n. 5996: not a GRB DATE: 10/04/03 19:50:26 GMT FROM: Diego Gotz at CEA D.Gotz, on behalf of the IBAS Localization Team report: like for IBAS trigger n. 5995, the IBAS trigger n.5996 is not due to a GRB, but to the galactic transient 1A0535+26, currently in outburst, that was not automatically recognized due to inaccurate attitude information.