  Due to the action of the intervening cosmic magnetic fields, ultra-high
energy cosmic rays (UHECRs) can be deflected in such a way as to create
clustered energy-ordered filamentary structures in the arrival direction of
these particles, the so-called multiplets. In this work we propose a new method
based on the spherical wavelet transform to identify multiplets in sky maps
containing arrival directions of UHECRs. The method is illustrated in
simulations with a multiplet embedded in isotropic backgrounds with different
numbers of events. The efficiency of the algorithm is assessed through the
calculation of Type I and II errors.
