Dramatic images have shown the moment climate protesters were removed from Parliament House by police.
Around a dozen demonstrators with the Rising Tide group were detained after forcing the closure of roads outside the building in Canberra on Wednesday.
Hundreds of protesters also gathered on the lawns of Parliament waving banners and chanting.
One man was carried by four police each holding a limb as a woman was encircled by half a dozen officers as she sat on the ground with a fist raised in the air.
Another group of three women linked arms and sat as police attempted to carry them away from the roads.
Others congregated beside the road, wearing high vis vests and T-shirts as some chanted into megaphones.
"The people are rising, no more compromising," members of the group yelled out.
Many brandished colourful placards with slogans including "no more coal and gas" and "time's up, cancel coal".
ACT Police has been contacted to confirm how many arrests were made.
Rising Tide describes itself as "a diverse movement" demanding Australia honours the goals of the Paris Climate Agreement.
It comes after almost 200 people associated with the same group were arrested for blocking the world's largest coal port in protest over politicians' perceived inaction to address climate change.
Protesters formed a "blockade" in the Port of Newcastle over the weekend, calling on the government to rule out new coal and gas mines and for a 78 per cent tax on coal and gas exports.
Some 170 people were arrested, with two hauled before Newcastle Local Court on Monday.
The vast majority of Australia's carbon emissions in the past decade have come from coal, oil and gas use, averaging 399 million tons of CO2-equivalent a year.
