  We show that, the result recently reported by the CDF collaboration showing
an excess in the invariant mass distribution of jet pairs produced in
association with a W-boson can be explained by a simple extension of the
Standard Model (SM) with an additional quasi-inert Higgs doublet. The two
additional neutral Higgs states H^0 and A^0 have a mass of about 150 GeV and
decay into a pair of jets. W^\pm H^0/A^0 pairs are produced from the decay of
the heavier charged Higgs boson H^\pm. Depending on the precise masses of the
neutral and charged Higgs bosons, the model is shown to be in agreement with
constraints from electroweak precision tests and from flavor physics for a
broad range of the Standard Model-like Higgs mass from 100 GeV to several
hundreds of GeV. Other possible signals of this model at the Tevatron and the
LHC are discussed.
