  The nearest active radio galaxy Centaurus (Cen) A is a gamma-ray emitter in
GeV to TeV energy scale. The High Energy Stereoscopic System (H.E.S.S.) and
non-simultaneous Fermi-LAT observation indicate an unusual spectral hardening
above few GeV energies in the gamma-ray spectrum of Cen A. Very recently the
H.E.S.S. observatory resolved the kilo parsec (kpc)-scale jets in Centaurus A
at TeV energies. On the other hand, the Pierre Auger Observatory (PAO) detects
a few ultra high energy cosmic ray (UHECR) events from Cen-A. The proton blazar
inspired model, which considers acceleration of both electrons and hadronic
cosmic rays in AGN jet, can explain the observed coincident high energy
neutrinos and gamma rays from Ice-cube detected AGN jets. Here we have employed
the proton blazar inspired model to explain the observed GeV to TeV gamma-ray
spectrum features including the spectrum hardening at GeV energies along with
the PAO observation on cosmic rays from Cen-A. Our findings suggest that the
model can explain consistently the observed electromagnetic spectrum in
combination with the appropriate number of UHECRs from Cen A.
