Extinction Rebellion protesters have released smoke flares and glued themselves to the road in Adelaide's CBD during peak hour this morning, blocking traffic on Flinders Street.
The group also spray-painted words on the office building of oil and gas company Santos.
Emergency services were at the scene, and police closed a section of Flinders Street, between King William and Pulteney streets.
The roads are now open to traffic as normal.
In a press release, the group said it was protesting against Santos and wanted the company to abandon fracking projects and invest more in renewable energy.
ABC News: Marco Catalano
)Extinction Rebellion said six people had blocked traffic, with four people glued to the bitumen on the road for more than two hours.
Another two people scaled the Santos building and glued their hands to the roof, but have since been removed.
ABC News: Marco Catalano
)SA Police Commissioner Grant Stevens said protests were "a regular feature of most civilised communities", but police would try to ensure traffic was not disrupted "unreasonably".
"People have a right to express their opinions," Commissioner Stevens said.
In response to the protest, a Santos spokesperson said the company was a "corporate leader in climate action", and that it had set a net-zero emissions target by 2040.
The spokesperson said that target was "well ahead of our industry peers and most governments".
ABC News: Alina Eacott
)Police charged a 32-year-old Paradise woman and a 64-year-old Flagstaff Hill man who allegedly climbed onto the building with being on the premises unlawfully, property damage and disturbing the peace.
A 70-year-old North Plympton woman, a 65-year-old Flaxley woman, a 38-year-old Mile End woman and a 65-year-old Henley Beach South woman were charged with loitering.
