TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5375 SUBJECT: IBAS Alert n. 3415: not a GRB DATE: 06/07/31 15:36:44 GMT FROM: Ada Paizis at IASF-INAF,Milano A. Paizis (IASF Milano), M. Turler, N. Mowlavi (ISDC Geneva) on behalf of the IBAS Localization Team report: IBAS Alert n. 3415 is not due to a GRB but to a variable known source