Two Hong Kong airport security staff were killed when a cargo plane skidded off a runway, hit their patrol vehicle, and plowed into the sea.

Emirates flight EK9788 was arriving from Dubai at about 03:50 local time on Monday when it veered off the runway, crashing through perimeter fencing and colliding with the vehicle, pushing it into the water.

The two people inside died. The Boeing 747 ended up partly submerged, but its four crew survived.

Officials are investigating the cause of the crash. The incident is one of the deadliest at Hong Kong International Airport, which has a strong safety record.

Divers located the bodies of the driver and passenger, aged 30 and 41, neither breathing when found. Airport officials expressed their condolences to the victims' families.

An Emirates spokesperson confirmed that the plane sustained damage upon landing, noting that the aircraft was operated by Turkish carrier Act Airlines.

Immediate rescue efforts saw the four crew members escape the aircraft, which revealed significant damage, with parts submerged and deployed emergency slides.

While the specific cause remains unclear, factors including weather, runway conditions, and aircraft performance are being scrutinized in the ongoing investigation.