A man in Australia tested positive for Covid-19 after finishing his hotel quarantine, authorities said, raising concerns about community transmission as more virulent virus strains emerge, Reuters reported.

The person is likely to have contracted the virus during his two-week quarantine in a Perth hotel, health officials said, adding genomic sequencing was underway to trace the source.

All passengers on a flight from Perth to Melbourne have been asked to self-isolate as the infected person on Wednesday travelled to his home in Melbourne after finishing his mandatory isolation, Victoria state Health Minister Martin Foley said.

“This is an important and I think timely reminder to all of us, that this global pandemic is not over,” Foley told reporters in Melbourne.