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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Eastern areas will enjoy the best of any drier weather today with showers pushing in to the north and west!
The singer, 31, said on Twitter that she and her partner Jonathan Powell were grieving their loss.
Showers will push in to the north and west overnight with dry spells further east. It will remain mild overnight!