  How much dust can be produced in the early Universe? Does dust production
depend on the average heavy-metal content of the hosting galaxy? Considering
supernova explosions, massive stars (Wolf-Rayet, LBV and RSG), and relatively
massive AGB stars among possible dust-generating objects in the early Universe,
we find that SN remnants can be regarded as the main source of the primordial
dust. However, this conclusion is based on highly uncertain (and probably
over-estimated) dust production rates. Despite all the uncertainties,
interstellar extinction must be taken into account while observing
high-redshift objects.
