Sydney police working the Association of South-East Asian Nations Australia Special Summit (ASEAN) will be given increased powers during the March 17-18 event.
South Asian heads of state are expected to join 500 Australian business leaders at the ASEAN summit. It's the biggest event to be held in Sydney since the APEC summit of 2007.
Under the temporary measures covering the Sydney CBD and surrounding suburbs, NSW Police officers will be allowed to search people and vehicles without a warrant, but only within the declared zone. People will also be asked to leave the area if police feel the need to do so.