  Statistically significant correlation between positions of unidentified
gamma-ray sources (UGS) and the regions of star formation (RSF) is found.
Fraction of UGS, coincided in position with RSF, makes up $47\pm 8$%. The
coincided discrete gamma-ray sources possess, on average, harder energetic
spectra and larger intensities with respect to the rest UGS. Annihilation of
dark matter concentrating in RSF is supposed to account for a possible origin
of gamma-radiation.
