'Organisational arrogance' on the part of different crime agencies hampered the probe into Madeleine McCann's disappearance, according to the author of a previously unpublished report on the investigation.
Jim Gamble told the Guardian: "Each one thought that their agency would bring the best to bear on this. We were all guilty."
He also told Sky News that different agencies trying to make their mark "created a sense of chaos and a sense of competition".
Mr Gamble, the former head of the Child Exploitation and Online Protection Centre, said this had also damaged the relationship between British and Portuguese investigators, leading to further difficulties.
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Cloud and outbreaks of rain will ease away eastwards during the morning, clearing the east coast around midday with sunny spells developing.
Police and emergency services are attending the scene.
Rebel-held east remains at risk while the pumping station supplying the western part of the city is once again in operation.