Four-jet final state production at LEP 1.5

The four-jet final state is analyzed to search for hadronic decays of pair-produced heavy particles.The analysis uses the ALEPH data collected at LEP in November 1995 at centre-of-mass energies of 130 and 136 GeV. An excess of four-jet events is observed with respect to the standard model predictions. In addition,these events exhibit an enhancement in the sum of the two di-jet masses around 105 GeV. The properties of these events are studied and compared to the expectations from standard processes and to pair production hypotheses.