A cluster of new coronavirus cases has emerged in Australia’s New South Wales State, health officials said, just as the country appeared on the verge of snuffing out all community transmission.

Health authorities were still investigating a mystery case in a man who tested positive on Friday in the western Sydney suburb of Berala. All six locally acquired cases registered today were close contacts of the man, Reuters reported.

The latest outbreak shows how easily the virus can spread, New South Wales state leader Gladys Berejiklian told reporters in Sydney as she called for more people to come forward for testing.

“What is really important is to make sure that, given we are towards the tail end of this particular outbreak, that there have not been other superseding events and we want to keep it that way,” Berejiklian said.