  We propose the model describing the observed multiple fast radio bursts due
to the close encounters and collisions of neutron stars in the central clusters
of the evolved galactic nuclei. The subsystem of neutron star cluster may
originate in the dense galactic nucleus evolutionary in the combined processes
of stellar and dynamical evolution. The neutron stars in the compact cluster
can produce the short living binaries with the highly eccentric orbits, and
finally collide after several orbital revolutions. Fast radio bursts may be
produced during the close periastron approach and at the process of the final
binary merging. In the sufficiently dense star cluster the neutron stars
collisions can be very frequent. Therefore, this model can explain in principle
the observed recurrent (multiple) fast radio bursts, analogous to the observed
ones from the source FRB 121102. Among the possible observational signatures of
the proposed model may be the registration of the gravitational wave bursts by
the laser interferometers LIGO/VIRGO or by the next generation of gravitational
wave detectors.
