The radio galaxy Centaurus A was observed by the BeppoSAX satellite five times from 1997 to 2000 .
From July 6 1999 to August 17 1999 , the source was also simultaneously pointed by COMPTEL on-board of the \gamma - ray satellite CGRO .
Centaurus A has a complex spectrum with multiple extended components and a strongly absorbed ( N _ { H~ { } } \sim 10 ^ { 23 } cm ^ { -2 } ) nucleus well fitted by a power law ( \Gamma \sim 1.8 ) which bends at high energies .
When the BeppoSAX and COMPTEL observations are combined together , an exponential cutoff with e-folding energy \sim 1000 keV gives an adequate description of the spectral steepening .
A complex feature in emission at 6-7 keV is resolved into two Fe K _ { \alpha } components , one narrow cold line and an ionized line centred at 6.8 keV .
Significant variations have been observed in the iron feature , with the less prominent ionized line seemingly being the only one responsible for them : its variations do not appear to correlate with the strength of the continuum .
The high energy cutoff and the Fe feature suggest the presence of an accretion flow in the Centaurus A nucleus .
However the absence of a significant reflection , the narrowness of the cold line as well as the lack of correlation between the continuum and 6.8 keV line variations disfavour a standard cold/ionized thin disk ( at least in the inner regions ) .
A more plausible configuration might be a hot thick optically thin accretion flow surrounded by material with different opacities .
Finally , we note that high energy break observed by BeppoSAX and COMPTEL could be also reasonably explained by Inverse Compton radiation from a jet .
If this is the case , a structured jet with outer slow layers surrounding a beamed inner region is necessary to explain the strong Fe feature observed by BeppoSAX .