  We describe a mechanism of the primordial black holes formation that can
explain the existence of a population of supermassive black holes in galactic
bulges. The mechanism is based on the formation of black holes from closed
domain walls. The origin of such domain walls could be a result of the
evolution of an effectively massless scalar field during inflation. The initial
non-equilibrium distribution of the scalar field imposed by background
de-Sitter fluctuations gives rise to the spectrum of black holes, which covers
a wide range of masses -- from superheavy ones down to deeply subsolar. The
primordial black holes of smaller masses are concentrated around the most
massive ones within a fractal-like cluster.
