Searches for pair-production of Supersymmetric particles under the assumption that R-parity is not conserved have been performed using the data collected by ALEPH at centre-of-mass energies of 130-172 GeV. The results for a dominant R-parity violating coupling LLE, for which the observed candidate events in the data are in agreement with the SM expectation, translate into lower limits on the mass of charginos, neutralinos, sleptons, sneutrinos and squarks. We also give preliminary results on the search for charginos, sleptons and sneutrinos via a dominant LQD coupling, and discuss the implications of our results on the R-parity violating interpretations of the recently reported excess of high Q2 events at HERA, and the ALEPH four jet anomaly
