All of Hong Kong's emergency forces are focused here. Wide-ranging rescue work is being carried out on in the sea, land and in the air.
Leung Chun-ying said he did not know what caused the collision but promised an investigation.
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A 29-year-old Frenchman - named by police as Smail Ayad - has been arrested on suspicion of murder.
The former Ukip leader told ITV News he thinks Trump can go all the way "if he sticks to his campaign messages".
Trump introduced Farage as "the man behind Brexit" who had won "against the odds".