Different sources are saying different things. Earlier it was said that they've tested positive yesterday & their samples have been sent for genome sequencing which will take 2 days but in night some news sources mentioned that sample was collected on 20th November & they've delta variant.
Closing International flights from the so called affected countries is not the solution to this situation.It may slowdown the spread for few days.But then people are clever over to come over from other countries.It is already happening.