Forty more people have been cured of the disease, taking the total number of recoveries in the islands to 749, he said.
All commercial establishments, shops, transport, barring those dealing with essential commodities and services, will remain shut, the order said.
The Andaman and Nicobar Islands administration has set up an isolation centre at the GB Pant Hospital with 50 beds.
Man tests positive for COVID-19 in Andaman and Nicobar Islands, first case to be found in pool testing
The man, a resident of the South Andaman district, has been admitted to the designated hospital, said Avijit Roy, the nodal officer for the disease in the Union Territory.