Queensland Premier Annastacia Palaszczuk has paid her respects to two police officers "tragically taken" in last week's shooting as arrangements are finalised for the constables' public memorial.
The premier laid flowers in memory of slain Constables Matthew Arnold and Rachel McCrow, and local Alan Dare, at the Chinchilla Police Station on Monday.
The trio were gunned down by Gareth, Stacey and Nathaniel Train at a rural property at Wieambilla, three hours west of Brisbane, last Monday.
A sorrowful premier spoke with police and locals in nearby Chinchilla and Tara about the loss of the two officers, who will be farewelled at a funeral in Brisbane on Wednesday.
"Everyone's gone through a really rough time out here and I want all of Queensland and all of Australia to continue to show their support for the two young lives that were tragically taken," she told reporters.
"Wednesday is going to be a very difficult day. It's going to be a very difficult day for everyone involved and today is an opportunity for me to come show my respects on behalf of the state to the two young people who lost their lives in such an unimaginable way."
Some 8000 people are expected to attend the memorial with full police honours at the Brisbane Entertainment Centre on Wednesday, before the constables are farewelled by family during private ceremonies.
"We want to recognise their sacrifice, honour their bravery and celebrate their lives," Superintendent Doug McDonald said on Monday.
Members of the public are invited to attend the ceremony alongside, family, friends, dignitaries and police officers, and free tickets will be available from Monday night.
The service will also be live streamed online and on TV, and Queenslanders will be able to watch the event at a number of public venues around the state.
Big screens will broadcast the ceremony in Brisbane King's George Square as well as venues in Townsville and Mackay.
Communities close to the tragedy in Tara, Dalby and Chinchilla will also be able to join together and watch the ceremony at public screenings.
While the tragic circumstances weigh heavily on all members of the Queensland Police Service, Supt McDonald said the outpouring of support has been of comfort.
"The number of people that have offered their support, from big companies to individuals in the street offering our officers their condolences ... has been truly overwhelming," he said.
Police Commissioner Katarina Carroll said many local police will attend the service for Constables Arnold and McCrow.
"There will be much sadness over the organisation, and Tara, and Dalby, and Chinchilla, for many many years to come," she told reporters.
"But we will band together to make sure that we all get through it - and we will - and the memorial, the full police honours ... will be a fitting tribute to two amazing young constables."
Investigators and the police union are probing the circumstances of the attack, which Constables Keely Brough and her colleague Randall Kirk managed to escape.
After the initial ambush, the Trains were shot dead in a firefight later that night with heavily armed tactical police officers.
The police union has started a fund for the two slain officers and a GoFundMe account has been set up for Mr Dare.
Another GoFundMe has been established for Constables Brough and Kirk by the former's friend Mindy Mackay.
She says the two constables can use the money for medical or psychosocial treatment, self-care, a holiday or "anything that will make their lives a bit easier".
"What these two officers experienced and witnessed is extremely traumatic and will impact both of them for the rest of their lives," Ms Mackay wrote.
Investigators still haven't determined a motive but are probing the links between the Trains and conspiracy groups online, and their digital footprints.
