The search for a grandmother from County Durham whose boyfriend has been charged with her murder will switch to a river and its banks, police have said.
55-year-old Pamela Jackson was reported missing from her home in Chester-le-Street a week ago and has not been seen since 2 March.
Her partner, 50-year-old Adrian Muir from Halifax, has appeared in court charged with her murder.
A major operation to find her has been mounted, with police and search specialists scouring Chester-le-Street town centre, railway embankments and woodland.
Durham Police said officers will take to the River Wear to join the search, concentrating on the stretch of water from Durham County Cricket Club to Fatfield in Washington.
Anyone who has any information which could help the police is asked to contact the force on 101 and ask for the incident room.
– Chief Inspector Elaine Taylor
"It is now one week since Pamela was reported missing and in that time there has been a tremendous amount of work carried out to try and determine what has happened to her.
"We are continuing to explore every possibility and following up all the actions we would normally do to locate a high-risk missing person.
"The specialists from the marine unit and the search and rescue volunteers will provide expert and additional support for our own teams."