The New Zealand government imposed a lockdown for three days in the country's largest city Auckland from midnight Sunday after the discovery of coronavirus infections in a family.

Under the first lockdown in the country since August, people are required to work from home unless they are unable to do so and public venues such as libraries, museums, gyms and pools must remain closed.

Prime Minister Jacinda Ardern addresses media quesitons during a COVID-19 press conference on Feb. 14, 2021 in Wellington, New Zealand. (Getty/Kyodo)

The infections were found in three members of a household -- a father, mother and their daughter who goes to high school. The mother reportedly works for an airline catering provider, but it is unclear how they got infected.

Prime Minister Jacinda Ardern stressed at a news conference the need to "go hard and early to avoid the risk of a wider outbreak."

"Three days...will give us time to gather further information, undertake large-scale testing, and establish if there has been wider community transmission," she said.