We present an analysis of five Suzaku observations of the bright Seyfert1 galaxy IC 4329A .
The broad energy band and high signal-to-noise ratio of the data give new constraints on the iron K \alpha line profile and its relationship with the Compton hump at higher energies .
The Fe K bandpass is dominated by a narrow core ( EW=57 _ { -3 } ^ { +3 } eV ) at 6.4 keV consistent with neutral material .
Using a physically-motivated model , our analysis also reveals the presence of a broad Iron K \alpha line ( EW=124 _ { -11 } ^ { +11 } eV ) , most likely produced in the inner part of the accretion disk and blurred by general relativistic effects .
This component is not immediately evident from the individual spectra , but is clearly present in the stacked residuals of all five observations , and has high statistical significance .
This highlights the difficulty in identifying broad iron lines in AGN , even in data with very high signal-to-noise ratio , as they are difficult to disentangle from the continuum .
The data are consistent with the narrow and broad iron line components tracking the Compton Hump , but do not provide clear evidence that this is the case .
An additional narrow Fe xxvi emission line at 6.94 keV is also seen , suggesting the presence of ionized material relatively distant from the central region .
There is also a hint of variability , so the precise origin of this line remains unclear .