A study of azimuthal angle void probability of produced pions has been carried out in relativistic and ultra relativistic nucleus-nucleus interactions ( 32 S-AgBr interactions at 200 A GeV, 16 O-AgBr interactions at 60 A GeV, 24 Mg-AgBr interactions at 4.5 A GeV and 12 C-AgBr interactions at 4.5 A GeV). The study reveals a very interesting observation-void probability showing scaling behaviour at significantly lower energy ( 24 Mg-AgBr interactions at 4.5 A GeV and 12 C-AgBr interactions at 4.5 A GeV