The Independent Police Conduct Authority (IPCA) will undertake an investigation into the policing of the anti-vaccine mandate protests at Parliament earlier this year.
Nearly 1900 complaints have been received - many from individuals who were not physically present at the protests but have concerns.
Some are from people who were there and have made complaints including the lawfulness of police powers, the use of force and particular tactics, and treatment in custody.
The IPCA said in a statement this afternoon it will undertake an independent review.