Victorian Premier Daniel Andrews announced Victoria's state of emergency will be extended until midnight on May 11, with measures designed to "flatten the curve" of coronavirus likely to remain in place well past that date.

With just three new cases of coronavirus recorded in the state on Sunday, Premier Daniel Andrews said restrictions were working.

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"We are aggressively tracing our outbreaks, and making sure this virus does not get away from us," he said.

"If it does, our health system will simply be overrun and people will die."

It comes as a authorities investigate the circumstances surrounding a man's death while being quarantined in a Melbourne hotel.

"Police are not treating the death as suspicious at this time," a health department spokesperson confirmed on Sunday.

"The coroner will be investigating the incident and as such we are unable to comment further."

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Mr Andrews said the man did not have coronavirus and was subject to a daily health check.

"I am confident and I have sought to confirm my confidence in the last 24 hours with all the arrangements we have in place," he said.

Meanwhile, the first group of quarantined travellers were released on Sunday morning after their mandatory two-week quarantine ended.

Victoria's total recorded COVID-19 cases stands at 1268, with 14 deaths.

Twenty-eight patients remain in hospital, with 16 of those in intensive care.

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Mental Health Minister Martin Foley announced a $59.7 million package for mental health organisations and practitioners to help meet demand during the pandemic.

Mr Foley said one in four calls to Lifeline relate to the virus, while Beyond Blue had experienced a 30-35 per cent increase in calls.

"They are answering calls day in, day out, from anxious, worried and increasingly unwell Victorians in relation to their mental health and wellbeing," he said.

Australia's national death toll from the virus stands at 58.

People in Australia must stay at least 1.5 metres away from others and gatherings are limited to two people unless you are with your family or household.

If you believe you may have contracted the virus, call your doctor (don’t visit) or contact the national Coronavirus Health Information Hotline on 1800 020 080. If you are struggling to breathe or experiencing a medical emergency, call 000.

SBS is committed to informing Australia’s diverse communities about the latest COVID-19 developments. News and information is available in 63 languages at sbs.com.au/coronavirus.