Breaking: Polish airport closed after reports of explosive device on London plane

A passenger plane from London has made an unscheduled landing at Warsaw–Modlin airport in Poland after a bomb threat alert, forcing the airport to close.

Another plane from Copenhagen is being checked at Warsaw–Chopin airport.

Security services were verifying the reported threat in Modlin, the airport said in a statement.

"At 9:54 a.m., a bomb threat alert was announced on board an aircraft operating a flight on the route London Heathrow (LHR) — Warsaw Chopin Airport (WAW)," it said.

"At 10:01 a.m., a Boeing 737 MAX aircraft landed at Warsaw/Modlin Airport.

"Due to the situation, Warsaw/Modlin Airport remains closed until further notice. The services are underway to verify the reported threat and ensure the safety of all people present at the airport."

The 181 people aboard the plane were being evacuated, it said. A spokesperson for Polish airline LOT confirmed it was an LOT flight.

A bomb threat was also reported on an SAS flight from Copenhagen to Warsaw, which landed at Chopin Airport and was being checked, a Warsaw–Chopin Airport spokesperson said, adding that the airport was continuing operations.

Warsaw has two airports. Chopin is within the city limits and Modlin, mostly used by budget airlines, is about 36 kilometres from the capital.