  The recent discovery of high-energy cosmic neutrinos by the IceCube neutrino
observatory opens up a new field in physics, the field of neutrino astronomy.
Using the IceCube neutrino detector we plan to search for high-energy neutrinos
emitted from Active Galactic Nuclei (AGN), since AGN are believed to be one of
the most promising sources of the most energetic cosmic rays and hence of
high-energy neutrinos. We discuss a specific type of AGN which we plan to
investigate in more detail with data obtained by the IceCube observatory. The
main properties of the AGN category in which we are interested are given by a
high-energy jet which is pointing in our line of sight defining a class of AGN,
called Blazars, and in particular the ones that are obscured by surrounding
dust. The jet-matter interaction is expected to give an increased high-energy
neutrino production. The properties of this specific type of AGN are expected
to give very distinct features in the electromagnetic spectrum, which are
discussed in detail.
