Authorities in Hong Kong cleared the main wreckage of a cargo plane on Sunday that veered off a runway and plunged into the sea.

The Boeing 747, operated by ACT Airlines, skidded after landing last Monday, colliding with a patrol car and killing two workers.

The four crew members on the plane were unhurt.

A salvage vessel lifted the front part of the plane from the water on Sunday afternoon.

Investigators are still working to determine the cause of the crash.

Experts will analyse data from the flight data recorder and cockpit voice recorder retrieved two days ago. A preliminary report is expected within a month.