(LONDON) -- A British Airways flight from London to Oslo made an emergency landing at Heathrow airport Friday morning after a fire broke out shortly after takeoff.
Video of the Airbus A319 coming in to land showed smoke streaming from one of the engines.
Passenger David Gallagher told ABC News “five minutes after take-off we heard a popping sound. Five minutes after that, the engine was on fire.”
Several eyewitnesses on the ground also described seeing an engine on fire.
Emergency fire crews were scrambled to meet the aircraft when it landed, and passengers evacuated almost immediately using emergency slides. London Ambulance Service said it treated three people for minor injuries.
British Airways told ABC News the aircraft was in the air for approximately 20 minutes.
Both runways at Europe's busiest airport were briefly closed, causing delays to flights.
British Airways says an investigation is under way.
Scotland Yard tells ABC News the incident is not terror related.
The flight was carrying two pilots, three cabin crew, and 75 passengers.
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