  Non-linear effects in the evolution of the axion field in the early Universe
may lead to the formation of gravitationally bound clumps of axions, known as
"miniclusters". Minicluster masses should be in the range $M_{\rm
mc}\sim10^{-12} M_\odot$, and in plausible early-Universe scenarios a
significant fraction of the mass density of the Universe may be in the form of
axion miniclusters. Here I argue that observed properties (total energy
release, duration, high brightness temperature, event rate) of recently
discovered Fast Radio Bursts can be matched in a model which assumes explosive
decay of axion miniclusters.
