Queensland police have charged a man with murder after remains believed to be a woman missing for several days were found in bushland.

As of Sunday morning, the remains were yet to be formally identified but Queensland police investigators believe they are those of Jana Armstrong.

Armstrong was reported missing from a suburb in Toowoomba, west of Brisbane, after she was last seen on Tuesday. Officers released footage of her wearing a green-and-white striped Country Road shirt, jeans and thongs, with her white Hyundai car about 500m from her home.

Det Acting Insp Brian Collins of the Darling Downs district said police had been alerted to possible human remains on Esk-Hampton Road at Redbank Creek about 10.40pm on Saturday.

The remains were discovered by members of the public who were out hunting. Police attended and a crime scene was declared.

“We believe that that person is, in fact, Jana, the missing person in this matter, and she was deceased,” Collins told a media conference on Sunday.

He said police had later executed a search warrant at a home on West Street in the Toowoomba suburb of Harristown. A 48-year-old man was arrested and charged with one count of domestic violence murder. Collins said the man had been found at a home with Armstrong’s four-month-old baby.

The man was due to appear at Toowoomba magistrates court on Monday.

Collins said police were calling for anyone who was in the area between Toowoomba and Esk – specifically on the New England Highway and Esk-Hampton Road – between 10.30pm on 7 July and 1.30am on 8 July to provide any dashcam footage or CCTV footage from homes with cameras that capture the roadway.

He said a postmortem examination would determine how Armstrong died.

“Our deepest sympathies to the family of Jana … as they’re victims of this horrific and horrifying crime,” Collins said.