  Sterile neutrinos of mass up to a few tens of TeV can saturate the present
experimental bound of neutrinoless double beta decay process. Due to the
updated nuclear matrix elements, the bound on mass and mixing angle is now
improved by one order of magnitude. We have performed a detailed analysis of
neutrinoless double beta decay for the minimal Type I seesaw scenario. We have
shown that in spite of the naive expectation that the light neutrinos give the
dominant contribution, sterile neutrinos can saturate the present experimental
bound of neutrinoless double beta decay process. However, in order to be
consistent with radiative stability of light neutrino masses, the mass scale of
sterile neutrinos should be less than 10 GeV.
