Forensic searches at "relevant properties" in North Shields and York are expected to continue for a number of days as police investigate the disappearance of Claudia Lawrence.
"Every effort will be made to minimise disruption to local residents and the public affected by this work," North Yorkshire Police said.
The comments came as 59-year-old Michael Snelling was released on conditional bail following his arrest on suspicion of murdering Ms Lawrence.
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