The Central Australian town will go into lockdown for 72 hours, Chief Minister Michael Gunner has said. Mr Gunner said the decision to lock down Alice Springs was prompted by a man from the Tanami mine site who spent time at Alice Springs Airport on June 25. LIVE UPDATES: Northern Territory Chief Minister Michael Gunner has announced Alice Springs will also be locked down.(9News) The man arrived at the airport via a charter flight on the Friday morning and remained at the airport between 9am and 3.50pm. He was tested for COVID-19 on June 26 after returning to Adelaide. The result was not positive, but the man has since developed symptoms while in isolation and four of his household contacts have now contracted COVID-19.