Police have said that, at the current time, they are satisfied there was no third-party involvement in the disappearance of missing nurse Victoria Taylor.
It comes as officers with North Yorkshire Police focus their search efforts around the River Derwent.
Ms Taylor left her home at 9am on 30 September, and was seen on CCTV just over two-and-a-half hours later at the BP garage on Welham Road in the Norton area of Malton.
Police said on Monday that they now have a further sighting of her, shortly before midday on the same day, at Malton bus station.
“To date, this is the last confirmed sighting of Victoria,” North Yorkshire Police said in an update.
Officers also recovered “several personal items” belonging to Ms Taylor, near to the river.
North Yorkshire Police said it had conducted searches of both land and water, as well as interviewing several witnesses and reviewing CCTV and passive data.
“Based on information obtained from these exhaustive enquiries, North Yorkshire Police is satisfied at the current time that there is no information to suggest any form of third-party involvement following the disappearance of Victoria and this remains a missing person case,” the force added.
The 34-year-old’s sisters previously said they feel “sick, distraught and lost”, following her disappearance.
In a statement, Emma and Heidi thanked people for their support but warned volunteers not to put themselves at risk during riverside searches for Ms Taylor.
They said: “We currently feel sick, distraught and lost following the disappearance of Vixx, but we are trying to focus on the children in the family to maintain a sense of routine at this difficult time.
“We would like to thank all the emergency services and volunteers who have assisted in the search for Vixx so far.
“The wider local community has also rallied around, and we are eternally grateful for the support that they have given to us, Vixx’s family.”
Inspector Martin Dennison from North Yorkshire Police said: “This is an extremely difficult time for Victoria’s family, and we are continuing to do all we can to try and find her.
“The focus of our search remains the area around the River Derwent and Victoria’s family members are aware of this and the wider strategy that is in place.
“The family and the police understand the local community wanting to show their support with the searches for Victoria, but we urge people to exercise caution when searching particularly near to the river.”