The airport will remain closed until further notice after a plane crashed in a "fireball".

Four people died Sunday when a small Dutch plane crashed near London Southend Airport, British police confirmed. Authorities believe all four occupants were foreign nationals, though their identities have not yet been released.The aircraft, operated by Dutch company Zeusch Aviation, was en route to Lelystad Airport in the Netherlands when it went down and exploded shortly after 4 p.m. The plane was a Beechcraft B200 Super King Air.

The pilot and co-pilot of the small plane that crashed Sunday afternoon near London Southend Airport were Dutch nationals, Sky News reported. According to the British broadcaster, the families of the two Dutch crew members have been notified.

Four people were killed when a small plane crashed at a London regional airport at the weekend, UK police have said.

Southend Airport remains closed after a small plane crash on Sunday afternoon. All Monday flights are cancelled or rerouted.

Police in the UK have said a serious incident has been declared at London Southend Airport after a small aircraft crashed.