June 4, Kathmandu- Australia’s Victoria state authorities said on Friday genomic sequencing has detected for the first time the Delta COVID-19 virus variant among infections in the latest virus outbreak in the state capital, Melbourne.

"That variant is the Delta variant, it is now infamous in India and increasingly found in the United Kingdom. It is a variant of significant concern," Victoria state Chief Health Officer Brett Sutton told reporters in Melbourne.

Sutton said the new variant had not been linked to any sequenced COVID-19 infections cases across Australia from hotel quarantine or elsewhere.

So far, two Victoria cases have the so-called 'Delta' variant of concern, which is likely the strain that caused the latest devastating wave of COVID-19 in India.

"It is a concern that it is not linked to other cases but we are chasing down all those primary-case contacts ... and looking into where it might have been acquired," Sutton said.

Victoria, Australia's second-most populous state, is battling to contain its latest outbreak - 65 cases since May 24 - after more than three months of no cases, placing tough restrictions on the movement of people and shutting down large parts of its economy. The government has linked all the cases to a single traveller released from quarantine after testing negative.