  The MAGIC collaboration reported the detection of a new VHE source, MAGIC
J0223+430, located close to the position of the blazar 3C66A, considered a
candidate TeV blazar since a long time. A careful analysis showed that the
events with energies above 150 GeV are centered on the position of the FRI
radiogalaxy 3C66B (at 6 arcmin from 3C66A), with a probability of 95.4% (85.4%
including systematic uncertainties) that the source is not related to 3C66A. We
present a model for the possible emission of 3C66B based on the structured jet
model already used to interpret the TeV emission of the radiogalaxy M87. The
model requires parameters similar to those used for M87 but a larger luminosity
for the layer, to account for the more luminous TeV emission. We also show that
the spectrum obtained by MAGIC can be interpreted as the combined emission of
3C66B, dominating above ~200 GeV, and of 3C66A. The high-energy emission from
the latter source, being strongly attenuated by the interaction with the
extragalactic background light, can only contribute at low energies. If we were
to see the jet emission of 3C 66B at small viewing angles we would see a
spectral energy distribution closely resembling the one of S5 0716+714, a
typical blazar.
