Brian Tamaki says he is still planning to protest by walking across Auckland's harbour Bridge tomorrow despite a police promise to stop it.

He's urging crowds to meet him at Victoria Park in the central city tomorrow for a protest in opposition to the COVID-19 restrictions.

Police Superintendent Naila Hassan told Heather du Plessis-Allan that the police are unsure if the march will actually go ahead, but that doesn't mean they are unprepared.

"We'd prefer to keep the operational details close to our chest, but we will be ready to respond to that group if they decide to march onto the harbour bridge."

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