  We demonstrate that the tentative detection of a few antihelium events with
the Alpha Magnetic Spectrometer (AMS) on board the International Space Station
can, in principle, be ascribed to the annihilation or decay of Galactic dark
matter, when accounting for uncertainties in the coalescence process leading to
the formation of antinuclei. We show that the predicted antiproton rate,
assuming the antihelium events came from dark matter, is marginally consistent
with AMS data, as is the antideuteron rate with current available constraints.
We argue that a dark matter origin can be tested with better constraints on the
coalescence process, better control of misidentified events, and with future
antideuteron data.
