The Indian state of Maharashtra has announced a mandatory seven-day institutional quarantine for all passengers flying in from "countries at-risk".
They will also be required to take three RT-PCR tests - on the second, fourth and seventh days after arrival.
The decision, which will come into effect immediately, was made late Tuesday after six international passengers from "countries at-risk" tested positive for COVID-19.
According to the state's health authority, all six passengers were "either asymptomatic or mildly symptomatic", with their samples sent for genome sequencing.
Meanwhile, all domestic travellers flying into Maharashtra will have to present a negative RT-PCR test report with 48-hour validity.
The list of "at-risk" countries includes European countries, the UK, South Africa, Brazil, Botswana, China, Mauritius, New Zealand, Zimbabwe, Singapore, Hong Kong and Israel.

Hong Kong court finds tycoon Jimmy Lai guilty in landmark security trial
Ukraine peace talks stretch into second day at start of pivotal week for Europe
Flash floods kill at least 37 people in Morocco's Safi province
'Hero' who disarmed Bondi gunman recovering after surgery, family says
School bus accident in Colombia kills 17, injures 20
Australia plans tougher gun laws after father and son kill 15 at Bondi Beach
Police to release man detained over Brown University mass shooting
Shooting at Australia's Bondi Beach kills 12
