  We point out that recently discovered 3.5 keV line in X-ray spectra from
various galaxy clusters and the Andromeda galaxy can be naturally explained by
physics of a sector responsible for spontaneous supersymmetry breaking in
models with R-parity. In this scenario the source of this line could be decay
of sgoldstino - scalar superpartner of massive gravitino. At the same time the
dominant dark matter component is stable gravitino whose mass is predicted to
be about 0.25 GeV.
