TITLE: GCN CIRCULAR NUMBER: 19251 SUBJECT: GRB 160401A: a long GRB detected by INTEGRAL DATE: 16/04/01 21:32:32 GMT FROM: Sandro Mereghetti at IASF/CNR S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), C.Ferrigno, E.Bozzo (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a gamma ray burst lasting about 130 s has been detected by IBAS in the IBIS/ISGRI data at 20:20:30 UT of April 1, 2016. The refined coordinates (J2000) are: R.A.= 89.7377 deg DEC.= 26.6758 deg with an uncertainty of 2 arcmin (90% c.l.). The burst had a peak flux of 0.7 counts/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 1e-6 erg/cmq. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html