An extensive search involving police divers has been called off near Nudgee Creek, in Brisbane's north, for a mother of four who has not been seen in more than a week.
Natarn Cassandra Auld, 38, was last seen on December 13, when a man dropped her to a home on Mount Cotton Road in Capalaba, in south-east Brisbane.
Police believe the woman left her home at about 3:00am the next day to travel to Banyo on Brisbane's northside to buy cigarette papers.
Detective Inspector Stephen Hollins from Bayside CIB said Ms Auld had no family or friends in the northside area, which is 25 kilometres away from her home in Capalaba.
"The last contact she had was with an associate in the early hours of that morning where she indicated she was off to buy some cigarette papers," he said.
Police will resume a search at several other locations today.
"We have been conducting inquiries in relation to her movements and we were able to establish that she was in Capalaba in the early hours of the 14th of December.
"In the early hours of that morning we have information she was in the Banyo, Northgate area.
"We have no information beyond that time. That is what has brought us here today to search the area."
SES volunteers searched a 25-kilometre area near Nudgee Creek on Wednesday morning, while police divers scoured local waterways.
All search efforts have so far failed to find any sign of the woman.
The night before she disappeared, Ms Auld was seen at a BP service station on Redland Bay Road in Capalaba.
CCTV footage shows Ms Auld buying food at the petrol station wearing grey pants, a grey jumper, thongs and a gold necklace.
The alarm was first raised when Ms Auld missed appointments to see family members last week, prompting her mother to report her missing on December 15.
Inspector Hollins said police held grave fears for the woman.
"[On] Tuesday and Thursday she was supposed to meet with family members and did not show up," he said.
"This is very much out of character and that is one of the things that makes us more worried about her safety.
"We are not speculating on whether she has been killed but we are very concerned."
She has not accessed her bank account or been on social media since she was last seen.
"We were able to establish that she was in Capalaba in the early hours of December 14 and also in the Banyo and Northgate area but we have no information beyond that time," Inspector Hollins said.
"We are very worried and so are the family — she is a mother [of four children].
"She has missed her mother's birthday, she has missed a couple of pre-arranged family visits and that has all added to our concerns, especially in the lead into Christmas."
Police described Ms Auld as Caucasian in appearance, about 170 centimetres tall with long, brunette hair and a slight build.
Police said Ms Auld had no medical condition that could account for her disappearance.
Anyone with any information about her whereabouts its urged to contact CrimeStoppers.
