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.
More top news
The Crown Prosecution Service says the internet has provided "new platforms for offending behaviour"
A Public Health England report estimated 150,000 to 200,000 Britons are infected with the virus by imported pork every year.
Tens of thousands of people have travelled to a sleepy town in the American west, to witness a rare celestial event.