A United Airlines' flight between New York and New Delhi was diverted to London's Heathrow airport after a passenger fell ill on board.
The airline in a statement did not refer to coronavirus as the reason behind the ill health of the passenger.
However, the development comes at a time when the global scare over the outbreak of coronavirus has reached alarming levels.
The Boeing 777-200 aircraft with 170 passengers and a crew of 15 was diverted to London.
According to the airline, arrangements are being made for the other passengers to complete their onward journey.