  The 511 keV emission from the Galactic Bulge observed by INTEGRAL/SPI could
be the product of light (1-100 MeV) annihilating dark matter particles. In
order to distinguish between annihilating light dark matter scenarios and more
conventional astrophysical sources for the bulge emission, we propose to test
the light dark matter hypothesis on the Sagittarius Dwarf Galaxy, a close-by
galaxy dominated by dark matter. The predicted flux being in the SPI
sensitivity range, the detection of a substantial 511 keV emission line from
this galaxy would provide a strong evidence for the light dark matter
hypothesis.
  During the two Galactic Center Deep Exposures performed in 2003, the
Sagittarius Dwarf Galaxy was in the field of view of several INTEGRAL
observations. In this paper we present preliminary results of the analysis of
these data.
