ACT police have arrested 22 people during protest activity at Parliament House today.
Environmental activism group Rising Tide staged the protest in order to call on the federal government to end new coal and gas projects.
The group is also urging the government to introduce a new tax on coal export profits.
A spokesperson for the group estimated around 500 people had gathered on the laws of Parliament House today when the rally began.
They said a smaller group then moved onto the road, where they were issued with move-on orders by police, which some people chose not to abide by.
The spokesperson said a smaller group also entered the lobby of Parliament House.
Environmental activism group Rising Tide are calling for an end to new coal and gas projects. (Supplied: Rising Tide)
ACT Policing has yet to confirm what the group will be charged with, saying only that they were arrested over "various offences".
Police said they would continue to monitor the area around Parliament House in case of any further protest activity and respond as required.
Sections of Federation Mall were closed to the public today while the protest took place.
Police arrested 170 people in Newcastle over the weekend after a protest halted port operations. (ABC Newcastle: Romy Stephens)
The protest was organised by the same group which staged anti-fossil fuel protests at Newcastle Port over the past week.
New South Wales Police arrested 170 people, including children, for allegedly defying police directions by entering the shipping channel and interfering with its activities on Sunday morning.
Police said 156 people arrested during that operation were adults, while 14 were children.
Thousands of people gathered in Newcastle late last week for what Rising Tide had described as "the people's blockade" of the world's largest coal port.
Dozens of protesters on kayaks and small water craft paddled out on Newcastle Harbour on Sunday morning.
The Port Authority was able to confirm that shipping movements in and out of the port were temporarily paused, but were able to resume on Sunday afternoon.
The Supreme Court had previously ruled that a state government attempt to prevent protesters entering the water was invalid.
Rising Tide had been promoting its Newcastle protests for months, but it was only able to receive a permit for the land-based portion of its demonstration.
It initially estimated more than 1,000 people would participate in the event.