Detectives have released CCTV images of murdered mother Sabrina Bremer leaving a Queensland police station as they struggle to piece together the final days of her life.
The burning body of Bremer, 34, was found propped up against a tree on a remote rural road in Dulguigan - 100km from her last known whereabouts - last Thursday, a day after she was reported missing by her teenage daughter.
A man driving along Pollards Rd about 7.30am made the nightmarish discovery when he noticed what he thought was a burning log on the roadside and stopped to take a closer look.
Initial reports stating the body had been tied to a tree have been dismissed by police as gossip.
Locals have been traumatised by the murder, which former Tweed mayor and lifelong Dulguigan resident Max Boyd described as "one of the most horrifying things that's ever occurred" in the area.
A team of about 50 detectives from the NSW Homicide Squad and Tweed-Byron State Crime Command has formed Strike Force Faringdon to hunt the killer down.
Bremer, who lived in Logan in southeast Queensland, was last seen alive at Logan police station on Monday, August 15, after she was arrested for missing an earlier court appearance on minor drugs charges.
She was released after spending about two hours at the station and is believed to have called a man she lived with to let him know she was on her way home.
Police have not revealed what Bremer's relationship was to the man or whether they have been able to interview him. Investigators questioned her ex-husband over the weekend. No suspects or persons of interest have been declared.
CCTV images released today show Bremer walking out of Logan police station last Monday afternoon but her movements over the next 48 hours remain a mystery.
"There's a great void in the timeline of her disappearance that we need to fill in," Tweed Heads crime manager Detective Inspector Brendon Cullen told news.com.au.
"We need people to come forward if they have seen her at any point between the Monday when she left the station and the Wednesday."
He said police were "keeping an open mind" about the possibility Bremer was killed by someone known to her, or a complete stranger.
Police have also released details of the car she is thought to have travelled in before she died. The white 2002 Toyota sedan with the Queensland registration 282VGN, was last seen in the Logan area, south of Brisbane, on the night of August 15.
Police have said that Bremer's 15-year-old daughter was able to contact her mother on the phone on Tuesday but reported her missing the following day after subsequent attempts to reach her failed.
Insp Cullen declined to clarify whether the teenager had actually spoken to Ms Bremer or communicated by text message.
The girl has posted a gut-wrenching series of Facebook posts as she struggles to come to terms with the dreadful manner of her mother's death.
Overnight she posted a photograph of a beaming Beamer while she was pregnant with her brother, who is at least 10 years her junior, with the caption, "I love you to the stars and back".
It is understood the little boy is being cared for by relatives and has not yet been told his mother is never coming come.
The daughter has written of the special bond she shared with her mother and friends have described her as loving and caring.
"She was like a second mother to all of us really," family friend Tyeshia Sailor-Black told Nine News. "It's like something out of a movie. Like, it didn't feel real. I didn't really want to believe it either."
Another friend, Kiarra Kwasniewski, said the daughter was close enough to her mother that "there would have been something there that would have made her think that something was going on".
She was described as being of caucasian appearance, 170cm tall, with a medium build, dark brown hair with red highlights, and a stud-piercing below her lower-right lip.
She is seen in the images dressed in a black jumper with a red T-shirt underneath, black tracksuit pants with white stripes down the side, and bright pink sneakers.