Australian Police say the woman whose body was found hidden at a Brisbane unit complex last month could have been dead for up to 13 years.
The woman, who is yet to be identified, was found at a unit complex in the northern suburb of Alderly on December 7.
Cleaners from the Department of Housing discovered the woman's remains, where she'd been partially buried behind a brick wall, tightly wrapped and covered in clothing and bedding.
ABC News reported a day after the woman's body was found, local police confirmed the remains were female.
Following just over a month of examining the woman's remains, police have determined she was Caucasian, between 155-156 centimetres tall with dark brown hair.
Police said the woman wore glasses and size 10 clothing and is believed to be between 30 and 55 years old.
Local police have since revealed there was "trauma" to her body and the woman's death remains suspicious. They added she died between 2009 and 2015.
While police have cast their net far and wide, they have not been able to identify the woman from missing person reports in Queensland or broader Australia.
ABC News reported Detective Superintendent Andrew Massingham said police "can place the body with a high degree of confidence here at the position it was found [last year] back in November 2015."
Det Supt Massingham added the time of the woman's death could extend to 2009.
"Her body is believed to have been at the unit block where she was located for that period of time," he said.
"We don't know if she was killed there or elsewhere."
Now a month on from the discovery of the woman's body, police are appealing for information.
Det Supt Massingha labelled the investigation "extremely complex" with "one of the biggest pieces of the jigsaw puzzle" being "the identity of the victim".
"It's very important that we strongly appeal for people to come forward with that information," he said.
"To try and trace the movements of an as-yet-unidentified woman from at least seven years ago is extortionary challenging."
While police are confident the woman was not a resident of the unit complex, they are working through interviews with previous tenants from as far as 2006.
"We are most of the way through interviewing past residents … We have some 50 left," Det Sup Massingham said.
"So, far this lady is not identified."
