As people in Auckland adjust to a new lockdown, health officials have said they’d found no evidence the coronavirus had spread further in the community, raising hopes the restrictions might be short-lived.

New Zealand’s largest city was hurriedly placed into a three-day lockdown on Sunday after three unexplained virus cases were found. It is the country’s first lockdown in six months and represents a setback in its largely successful efforts to control the virus.

Director-General of Health Ashley Bloomfield said the negative test results since the first three were found was an encouraging start, but cautioned a fuller picture of the outbreak wouldn’t emerge until Tuesday, when the results from an expanded testing regimen would be known.

According to AP, New Zealand also announced its first batch of vaccine had arrived. Officials said the shipment of about 60,000 doses of the vaccine developed by Pfizer and BioNTech would initially be prioritised for border workers.