The flight HX246 departed for Shanghai at around 1pm. After about an hour, a person made a comment on Airport Authority's website, saying a bomb was on the plane.

The airplane had to return to Hong Kong and landed at 4pm.

Passengers disembarked orderly, taking shuttle buses back to the terminal.>

On September 11, a person had left another message on the Airport Authority website, saying there was a bomb on CX390.

Passengers had to be evacuated on emergency slides when the plane landed in Beijing.

It was understood that when police received a report about the bomb threat, the plane already left Hong Kong.