Australia's largest state, New South Wales (NSW), has recorded two locally acquired coronavirus cases as concerns grow over the further spread of infections amid an increase in exposure sites, reports Reuters.

The point of transmission of the new infections hasn't been determined yet, but authorities believe they are linked to the first case of the Sydney cluster of the highly infectious coronavirus Delta variant, which now stands at six cases.

The list of exposure sites has been updated to now include 20 venues across Sydney’s eastern suburbs.