Climate protesters disguised anti-fossil fuel messages in clothing and smuggled camera equipment in a wheelchair to film a dramatic disruption of Queensland parliament.
The protesters chanted "stop coal, stop gas" as they unfurled banners and glued themselves to handrails during Question Time on Wednesday.
Security later discovered protesters had exploited disabled access to the parliament by hiding recording devices in a wheelchair, the Speaker said.
"In a particularly despicable act, cameras to film and livestream the protest were brought in by accomplices using disabled access facilities for a wheelchair, this avoiding metal detectors," Speaker Curtis Pitt told parliament.
"The protesters brought in protest material to the gallery hidden with the clothes, skirts, shawls, et cetera."
The breach of security within the parliamentary precinct is now under investigation by Queensland police, with the offenders expected to face charges.
The disruption by 10 Extinction Rebellion members launched as Premier Annastacia Palaszczuk outlined decarbonisation plans.
The demonstrators stood up from their seats in the public gallery, chanting "stop coal, stop gas", and walked towards the zone reserved for journalists and Hansard reporters.
They unfurled anti-fossil fuel banners over handrails, which some glued their hands to before Mr Pitt ordered the parliament's sergeant-at-arms to close the public gallery.
He also ordered one of the protesters to stop filming the demonstration.
"Order! The member of the gallery will put that device down," Mr Pitt shouted as the chants continued.
"You should not have a phone, it will be confiscated ... as will the second device that you're now holding."
After the disruption Ms Palaszczuk defended the government's decarbonisation plan while condemning the protest.
"This is the strongest plan in the nation," she told parliament.
"And our democracy here should be able to function without any fear for members' security.
"I do want to reiterate that because people have the right to protest silently, I absolutely endorse that in public, but there are rules of this chamber, and I'll leave that for you to reflect on, Mr Speaker."
Extinction Rebellion spokesman David Tucker attacked the government's plan to cut emissions by 30 per cent by 2030, saying it was not enough to prevent global warming of 1.5C.
He also criticised the Palaszczuk government's omission of coal and gas exports from its climate plans.
"Continuing to export fossil fuels is reckless," he said in a statement.
"Fossil fuels, no matter where they are burnt, impacts everyone across the world. We all share the same atmosphere."
