London Airport has evacuated the terminal building after a suspicious item was found in the security search area.
A spokesperson said the decision has been taken in conjunction with police to ensure the safety and security of passengers and staff.
All incoming flights have been suspended and the approach road to the airport has also been closed.
Passengers are advised to contact their airlines to establish the status of their flights.
Further updates regarding the security and operations at the airport will be provided as soon as possible.
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