Newly released CCTV images show missing mother Nicola Bulley loading the car before a school run on the day she disappeared.
Friends shared the images in an attempt to inspire eyewitnesses to come forward with information which could prove useful to finding her.
It added: "We must stress that she was very much being treated as a witness and was one of many people in St Michael's on Friday, January 27th," the force added. "The speculation and abuse on social media aimed at some people who are merely assisting our enquiry is totally unacceptable.
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Police looking for Nicola Bulley release CCTV image of 'key witness'Officers believe the woman, who was pushing a pram, may have walked along the river path at a similar time to the 45-year-old's disappearance
Read more »
'Key witness' in disappearance of Nicola Bulley comes forward after CCTV appealLast night Lancashire Constabulary appealed for a woman seen on CCTV pushing a pram close to the River Wyre on the morning Nicola vanished.
Read more »
Nicola Bulley's friend shares 11 facts including dog harness location and CCTVTilly said she could no longer stand by and let the speculation cause 'hurt and distress' to the family
Read more »
CCTV camera that could have captured Nicola Bulley's fate 'was only one broken'Detectives are pursuing a theory that the mum-of-two may have fallen into a river as she walked her dog on January 27.
Read more »