No public transport will operate during lockdown, essential services including medical services will function.
"We know people will face difficulties, but lockdown is necessary to contain spread of coronavirus. Delhi's borders will be sealed during lockdown but will ensure people providing essential services do not face difficulties," said Kejriwal.
No transport services will be allowed, despite few DTC buses.
There are 27 cases in Delhi - 6 of them fall under the category of transmission, 21 had come from foreign countries, the Chief Minister said.