Cold case reward reaches $1 million as detectives search for mother's killer

Theresa Binge was last seen in Queensland in July 2003, but her body was found across the border in NSW 11 days later.

Ms Binge's family has never stopped campaigning for answers and will join investigators in Moree to call on the public for any additional information about the case.

Ms Binge was last seen alive at the O'Shea's Royal Hotel in Goondiwindi at midday on July 18, 2003.

She was wearing a horizontal striped black and yellow football jersey, silver track pants and white running shoes.

Family members grew concerned after days without hearing from her, and Ms Binge was reported missing on July 21.

Eight days later, on July 29, Ms Binge's body was found in a drainage culvert beneath the Mungindi-Goondiwindi Bridge Road, formerly Boomi Road, in NSW.

The investigation was handed from Queensland Police's missing persons unit to Moree detectives after the body was found.

But after years without new developments, the case was referred to NSW's unsolved homicide team.

A $1 million reward for information has been announced. It is an increase from the original $100,000 reward offered by the NSW government in 2007.

The $100,000 reward was announced in the same year that an inquest began, finding Ms Binge had been murdered by an unknown person or persons.

Detectives will be in Moree, Goondiwindi and the surrounding areas in early November, raising awareness about Ms Binge's case and calling for information.

Homicide Squad Commander Detective Superintendent Joe Doueihi said police were "bringing the message directly to the people" with a mobile billboard.

"The billboard will be travelling between Moree and Goondiwindi to ensure this announcement reaches those who might not see it online or in the papers,' he said.

"Someone out there knows what happened to Theresa, and we want them to see this and come forward.

"Time can change things. People move on, relationships change, and what felt impossible to say years ago may feel more doable now. If you've been holding onto something, this is your chance to speak up.

"This reward isn't about money, it's about justice. It's about giving someone the push they need to do the right thing. If you know something, now is the time."

Anyone with information about this incident is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au. Information is managed on a confidential basis.