Ion yield spectra and angular distributions of Cl^- and I^- ions formed by dissociative electron attachment on ICl molecules have been obtained with a crossed-beam electron impact spectrometer, in the 0-6 eV energy range. Kinetic energy and angular measurements show that two ICl^- states with ² Pi _3/2 and ² Pi _1/2 symmetry are involved in Cl^- ion formation, one around 0.85 eV, associated with ²P_3/2 neutral fragments, and the other around 4.55 eV (+I ²P_1/2) respectively, whereas a ² Sigma ⁺ and a ² Pi resonance state are responsible for the I^- (+Cl²P) ion formation around 1.45 and 3.7 eV respectively. The Cl^- and I^- relative differential cross sections do not show evidence of non-adiabatic dissociation processes. The analysis of the measured angular distributions also does not show any effect of the spin-orbit interaction upon the symmetry of the resonances, since they are found to have a pure Lambda -type symmetry.