Australia has reported its first coronavirus-related death of the year and a 2021 record 77 new cases of the virus in the state of New South Wales, which is battling an outbreak of the highly infections Delta variant.

State Premier Gladys Berejiklian said the numbers in and around the country's biggest city Sydney, which is in a three-week lockdown, are expected to rise further in coming days.

“I'm anticipating the numbers in New South Wales will be greater than 100 tomorrow,” Berejiklian told a televised briefing. “I will be shocked if it is less.”

On Saturday there were 50 cases, the previous 2021 record high. This takes the recent outbreak to 566 cases, according to a Reuters report.