London Luton airport has evacuated its terminal building and suspended all flights after a "suspicious item" was found.
The alarm was raised at around 1330 this afternoon and the area was immediately cleared.
Police are now examining the package and the airport has advised passengers to contact their airline for information regarding the status of flights.
The airport said on its website: "London Luton Airport has evacuated the terminal building after a suspicious item was found in the security search area.
"The decision has been taken with the police to ensure the safety and security of passengers and staff."
A statement from Easyjet said: "As a result of the evacuation of London Luton Airport, no flights are able to take-off or land at the airport at present and passengers are not able to board or disembark flights.
"Six Easyjet flights scheduled to land at London Luton Airport have been diverted — four to Stansted Airport, one to Birmingham Airport and one to London Southend Airport. All passengers will be coached to Luton. The airline has also cancelled 12 flight sectors as a result of the closure of the airport."