Queensland's attorney-general has backed an inquiry into police responses to domestic violence to make "strong" recommendations after it extended its reporting deadline by more than a month.
Judge Deborah Richards has asked for more time to hand down her findings and recommendations from the Commission of Inquiry into Queensland Police Services responses to domestic violence.
The inquiry was scheduled to report on October 4, but the commissioner said so much evidence on cultural issues in the force had been received that the final report will be handed down on November 14.
Attorney-General Shannon Fentiman said she understands the need for the extension.
"I have every confidence that Judge Richards will make some very strong recommendations about how we can ensure that women, no matter where they are in Queensland, get the support that they need," she told reporters on Friday.
The inquiry was due to complete its gathering of evidence after QPS Commissioner Katarina Carroll took the stand at a public hearing on August 18.
However, a number of police force members contacted the probe to provide unsolicited evidence about cultural issues after Ms Carroll admitted the force had significant problems involving sexism, misogyny and racism.
Four days later, the commission reopened for submissions on QPS culture and has since received more than 130 written responses.
Judge Deborah Richards has asked for more time to probe the "significant response" and will hand down its final report on November 14, five weeks later than originally planned.
"The reporting extension to 14 November will allow the Commission to conduct a thorough review of the additional submissions and call for any additional information from the QPS," an inquiry spokesperson said in an emailed statement on Thursday night.
Earlier on Thursday, the inquiry confirmed it had made formal requests for additional material from the QPS before the submission deadline closes next Monday.
However, it wouldn't confirm media reports that it had asked senior QPS executives to hand over their disciplinary files.
"The Commission will not be commenting on the specifics of what has been requested of the QPS," an inquiry spokesperson told AAP.
"The Commission of Inquiry will make a decision on whether Police Commissioner Katarina Carroll or other witnesses are recalled once the closing date for submissions has passed."
After steadfastly denying the QPS was plagued by cultural issues, Ms Carroll told the inquiry she was appalled about vulgar public comments made by two senior police officers, including her deputy who later resigned.
The second officer remains on leave with his future in doubt as the service seeks legal advice.
