Police are continuing to appeal for help to trace Brenda Wignall, who is missing from home in Preston.
Brenda, 58, has not been seen since the early hours of Friday (11 October) in the Marl Hill Crescent area.
Officers – with the support of teams from Lancashire Fire and Rescue, Mountain Rescue and the Coastguard – have been conducting a number of searches since Brenda went missing.
While the police are making extensive CCTV enquiries, they are now asking anyone who owns CCTV and lives in the Moor Nook area to check their footage.
Brenda was last seen at her home address on Marl Hill Crescent at 2am on Friday morning, but could have left at any point between 2am and 10am.
Chief Inspector Gary Crowe said: “If you have any footage that potentially shows Brenda, or if you have seen a woman matching her description, we need to hear from you.
“Any information, no matter how small or seemingly insignificant, could prove crucial to our investigation.
“Furthermore, I would also urge Brenda, if she sees this appeal, to get in touch with us, a friend or relative and let us know she is okay.”
Brenda is described as being 5ft 4in tall, of slim build with blonde hair that is styled in a bob. Police had previously issued a description of Brenda’s clothing, however now say it is not known exactly what she was wearing.
Aside from Moor Nook, Brenda has links to Walton-le-Dale and Longridge.
If you have seen Brenda please call the police immediately on 01772 209702 or 101, and quote log number 652 of the 11th.