  A search for aligned events has been done throughout the muon group events
measured with Baksan Underground Scintillation Telescope (BUST) during a long
period of time. Only groups of multiplicity >3 for muon threshold energies
equal to 0.25; 0.85; 2.0 and 3.2 TeV were selected for the analysis. A
distribution of the events on the alignment parameter /lambda has been obtained
and compared with the results of Monte-Carlo simulation made for this
experiment. Upper limit for aligned muon groups flux is given.
