The family of Claudia Lawrence are calling for a fresh investigation into her disappearance as they mark the fourth anniversary of her disappearance.
Her mother and sister say detectives focused too much on her private life and lacked sensitivity whilst handling the case.
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North Yorkshire Police say:
"They invited the National Policing Improvement Agency to conduct a second voluntary review of the investigation in 2010.
"Their report concluded that the investigation had been conducted with integrity and objectivity...and that, where individuals had been subject to investigation, no opportunities had been overlooked."