THE family of missing Warwick woman Gail Lynch say the phone has not stopped ringing since news broke of the 55-year-old's disappearance.
But Lyn McMillan is desperate to hear from only one person - her missing sister.
Ms McMillan said family members had done extensive letterbox drops calling on people to come forward if they had any information on her sister's whereabouts.
"At least it is giving us something to do," Ms McMillan said. "We are just doing things to keep busy."
SES volunteers were expected to spend the weekend searching for Mrs Lynch in the Warwick area but to expand their search parameters.
They have already scoured the Warwick region and boundaries of the Condamine River.
It is understood a Warwick construction site was shut down on Friday and workers sent home while police searched skip bins on the site.
Regional crime co-ordinator for the southern police region, Detective Inspector Darrin Shadlow, said there was no new information to report.
Mrs Lynch was last seen on Tuesday, July 3, at her Guy St unit.
She spoke with her sister Lyn that evening, but has not made contact or been seen since.
Det Insp Shadlow said forensic officers had examined the home of a 58-year-old Rockville man.
The man, who was a close friend of Mrs Lynch, was interviewed by police on Wednesday before being released without charge.
Forensic officers also combed his blue 2004 BA model Ford Falcon, as well as Mrs Lynch's Warwick unit, looking for clues.
Det Insp Shadlow told a press conference on Thursday it was totally out of character for Mrs Lynch to be away from her home for such a long time.
"We obviously hold grave fears for the welfare of Mrs Lynch," he said.
Police were interested in speaking with anyone who had seen a blue 2004 BA model Ford Falcon
sedan in the Warwick area between 6pm on July 3 and 6am on July 4.
Anyone who may have seen the car or Mrs Lynch is asked to contact Crime Stoppers on 1800 333 000.