Newport West MP Paul Flynn says the row over the forcing out of the former Gwent Chief Constable by the force's Police and Crime Commissioner shows "it is the system that is wrong - it's going to happen elsewhere too."
He said the problem is "two people thought they were running the police force".
Ms Napier has called on the UK government to consider whether the independence of operational policing could be compromised by the power given to PCCs.
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It will be wet and windy this evening and through much of tonight with some heavy rain at times.
Welsh golfing legend Ian Woosnam has set his sights on securing a home victory at the Wales Senior Open in Newport.
It will be a bright start to Saturday, with some sunny spells. However, cloud and rain will reach the far west by late-afternoon.