A Delta flight to Detroit is diverting to London due to a medical emergency.
The Boeing 767-400ER departed Munich at 11:45 CEST but turned around before crossing the Atlantic.
The flight landed at London Heathrow on runway 27R 3 hours and 30 minutes after departure.
According to Flight Emergency, the flight had to divert due to one of the crew members becoming unwell.
The airline is planning a refuel and a new departure one hour later.