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Police offer $500,000 reward for missing Qld mother

A $500,000 reward is being offered for information about the disappearance of a Queensland mother 24 years ago.

Christine Maria Fenner was living in Booyal, southwest of Bundaberg, when she disappeared on Friday, February 12, 1999.

Queensland Police on Thursday will offer a $500,000 reward in the hope it will lead to the discovery of Ms Fenner's remains and disclose the circumstances of her disappearance.

Ms Fenner was living with her de facto partner when she went missing while he was helping a neighbour to move house.

He was away for about four hours, and when he returned about 5.30pm, Ms Fenner was gone.

Her former partner, who is now deceased, told investigators Ms Fenner had gone missing previously but had always come home.

Her cigarettes, bank book and even her shoes were left behind, and no trace of the mother-of-two has been found.

A coronial inquest in 2008 found Ms Fenner was in poor health and that she and her partner had argued the night before her disappearance.

"The relationship was generally described by most to be good. Ms Fenner described herself as happy in that relationship," the coronial report found.

According to her missing person report, Ms Fenner had brown hair, green eyes and a blue scroll/green heart tattoo on her left shoulder. She also had a scar on her left shoulder.

Ms Fenner would now be aged 72.

Her son William still dreams of his mother almost a quarter of a century since she went missing.

"Mum was very much loved," Mr Fenner said.

"Over the years, the impact that has had on our lives has been more far-reaching as a family than ever we could imagine."

He described his mother as a fun-loving person and a cheeky lady.

"They remember her as someone who brought laughter and happiness into their lives," Mr Fenner said.

Ms Fenner's last wishes were for her remains to be scattered in Fremantle, and her family has begged for help to close the painful chapter of their lives.

"We'd like to have that ceremony and give her that respect," Mr Fenner said.

"I'm just asking to really tap into the consciousness of the person and their heart and try and relate to how they would feel with their family if one of their family members went missing."

Cold case Detective Senior Sergeant Tara Kentwell said police had followed every shred of information, searching bushland, dams and sewerage systems, but no trace of Ms Fenner had been found.

"We know that there are people out there who hold vital information that could assist in the progression of this investigation," she said.

"We ask that if anyone has any information, no matter how small or relevant they think it may be, to contact Crime Stoppers."