TITLE: GCN CIRCULAR NUMBER: 6179 SUBJECT: IBAS Alert 4162: Not a GRB DATE: 07/03/07 19:12:29 GMT FROM: Sandro Mereghetti at IASF/CNR S.Mereghetti (IASF-Milano), D.Gotz (CEA-Saclay) and N.Mowlavi (ISDC- Versoix) on behalf of the IBAS Localization Team communicate IBAS Alert n. 4162 is not due to a GRB. It has been caused by a known source. The attitude information was incorrect at the time of the trigger