LONDON // Both runways were closed at London's Heathrow airport today, a spokeswoman said, after a British Airways Airbus A319 plane reportedly had to make an emergency landing.
"Both runways are currently closed," the spokeswoman said. "All passengers and crew have been safely evacuated from an aircraft which is on the northern runway.
"The incident involved one plane. Everyone has been safely evacuated."
Smoke was seen emerging from the plane as it tried to take off, according to reports.
The southern runway has since reopened at the busiest airport in the world.