TITLE: GCN CIRCULAR NUMBER: 6607 SUBJECT: INTEGRAL GRB 070707 is a short hard burst DATE: 07/07/07 23:37:18 GMT FROM: Diego Gotz at IASF-CNR D. Gotz (CEA Saclay), V. Beckmann (ISDC, Versoix), S. Mereghetti, and A. Paizis (IASF, Milano) on behalf of the IBAS localization Team report: A refined analysis of GRB 070707 shows that it is composed by a single spike lasting about 1.1 s, and its spectrum can be well fit with a power law of slope 1.4, indicating a rather hard spectrum. Its refined position is R.A. (J2000): 267.7506 [degrees] DEC. (J2000): -68.9144 [degrees] with an uncertainty of 2.1 arcmin (90% c.l.) This messages can be cited.