A previously unpublished report into the disappearance of Madeleine McCann says the investigation was hampered because different police forces were competing against one another.
The report from Jim Gamble, the former head of the Child Exploitation and Online Protection Centre, also attacked the decision to put Leicestershire constabulary in charge of the probe.
Mr Gamble said the force was not properly equipped to deal with such a wide-ranging investigation.
According to Sky News the report, originally commissioned in 2009 by then Home Secretary Alan Johnson, led the Metropolitan Police to re-open the investigation in 2011.
More top news
A team at Maastricht University, led by Prof Mark Post, want nothing less than to revolutionise our food industry with lab-grown meat.
Santa Montefiore said she hoped her "beloved sister" was being looked after in Heaven during a private funeral.
A tribunal decided that people with certain mental health conditions should be able to claim Personal Independence Payments.