TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2546 SUBJECT: IBAS Alert 1678: not a GRB DATE: 04/03/17 03:23:35 GMT FROM: Diego Gotz at IASF-CNR D. Gotz on behalf of the IBAS Localization Team, N. Mowlavi on behalf of the ISDC report: IBAS Alert number 1678 is not due to a Gamma Ray Burst. This message can be cited.