  The origin of the IceCube neutrinos is still an open question. Upper limits
from diffuse gamma-ray observations suggest that the neutrino sources are
either distant or hidden from gamma-ray observations. It is possible that the
neutrinos are produced in jets that are formed in the core-collapsing massive
stars and fail to break out, the so-called choked jets. We study neutrinos from
the jets choked in the hydrogen envelopes of red supergiant stars. Fast
photo-meson cooling softens the neutrino spectrum, making it difficult to
explain the PeV neutrinos observed by IceCube in a one-component scenario, but
a two-component model can explain the spectrum. Furthermore, we predict that a
newly born jet-driven type-II supernova may be observed to be associated with a
neutrino burst detected by IceCube.
