Environmental protesters from the Extinction Rebellion movement have been dragged out of WA's Parliament after interrupting the Lower House's sitting by chanting and throwing materials.

Key points: More than 200 people protested outside WA's Parliament House

More than 200 people protested outside WA's Parliament House The protesters are connected to a movement that has protested in other cities

The protesters are connected to a movement that has protested in other cities Parliament was halted for half an hour while protesters were evicted

One woman was dragged out of the Legislative Assembly in handcuffs while a handful of others were escorted out by police officers after holding up proceedings for nearly half an hour.

The drama took place while a few hundred people protested outside State Parliament, demanding greater action on climate change.

Several protesters refused repeated requests by police, with both officers and Speaker of the House Peter Watson urging the crowd to leave.

People gathered at WA's Parliament House for the protest. ( ABC News: James Carmody )

"Can you just leave please, we have a job to do for the people of Western Australia," Mr Watson said.

But protesters then threw pieces of paper onto the floor of Parliament and continued singing, with some insisting they would not leave before they could speak to the Government.

"We are in a climate emergency and you have failed to act," one protester said.

A large police contingent was present at the rally. ( ABC News: Hugh Sando )

"We were asked to leave the chamber, some of our members resisted passively and they were carried out by police."

Police warned the protesters inside the Legislative Assembly public gallery that they would be charged, before journalists were escorted out of the chamber.

Protesters dragged out of Parliament

Some protesters left voluntarily while others were dragged from the public gallery by police.

One man was carried out of the chamber by four officers, one carrying each limb, where he was greeted by supporters.

Some protesters were dragged from the public gallery by police. ( ABC News: James Carmody )

All MPs exited the chamber as soon as the protest began, with proceedings halted for half an hour.

As the arrested protesters were removed from the south entrance of Parliament House, their supporters blocked the path of police by sitting on the paths and road.

Officers were forced to take some activists out of the east exit, carrying one man down dozens of steps before putting him into a police van.

The protesters also briefly lay on a road behind Parliament, blocking traffic.

Protesters lay down outside Parliament, blocking a road. ( ABC News: Hugh Sando )

Extinction Rebellion WA has described itself as a loose coalition of people concerned about the environment.

Two weeks ago, the movement sent a letter to WA Premier Mark McGowan asking for a meeting and making a number of demands, which included reducing the state's carbon emissions to zero.

Refusal to meet with the group came with a threat that it would use "non-violent civil disobedience" to get its message across.

The protesters are demanding greater action on climate change. ( ABC News: James Carmody )

Mr McGowan acknowledged he had received the letter but did not intend to attend the rally or meet with the group.

WA Police issued a statement saying five people were arrested and will be charged via summons with offences including breaching a move-on notice, trespassing and obstructing officers.

Ten move-on notices were issued in total.

An Extinction Rebellion protest in Brisbane earlier this month saw more than 70 people charged with offences including obstructing traffic, obstructing police and public nuisance.

Several protesters disrupted traffic by sitting on roadways before they were arrested.