Some possible sources of IceCube TeV-PeV neutrino events

The IceCube Collaboration has observed 37 neutrino events in the
energy range 30 TeV < E_{\nu}  < 2 PeV
and the sources of these neutrinos are unknown. Here we have shown
that positions of 9 high energy blazars and the position of the FR-I
galaxy  Centaurus A, coincide within the error circles of 10 IceCube
events, the later being in the error circle of the highest energy
event so far observed by IceCube. Two of the above blazars 
are simultaneously within the error circles of the Telescope Array
hotspot and one IceCube event. We found that the blazar
H2356-309 is within the error circles of three IceCube events.
We propose that  photohadronic interaction of the Fermi accelerated high energy protons
with the synchrotron/SSC background photons in the nuclear
region of these high energy blazars and AGN are probably responsible
for some of the observed IceCube events.