The neutrino-induced upward muon energy spectrum on Earth at the TeV energy range emitted by the point source 3C273 AGN has been calculated using the AGN-emitted neutrino spectrum of Szabo and Protheroe and the result has been
compared with that expected from background neutrinos. The QCD-based model of Berezinsky et al. has been fairly employed to estimate the muon contribution due to the charge current interactions in rock. The diffuse
neutrino-induced upward muon energy spectrum from AGN sources has also been estimated and compared with the
expected results from the spectra of prompt neutrinos and atmospheric backgrounds. It is found that the upward muon fluxes generated by AGN neutrinos are dominating
the Universe beyond 10 TeV muon energy