A passenger on Air India Delhi-Ludhiana flight on Tuesday has tested positive for coronavirus. The passenger works in the security department of Alliance Air. All the passengers of this flight are now under state quarantine, Air India said in a statement on Wednesday. On Monday, the first day of resumption of domestic flights, a passenger on a Chennai-Coimbatore Indigo flight had tested positive for coronavirus. After this, Indigo grounded the entire crew of the flight and said that it was trying to get in touch with the other passengers.