The fire broke out in a machine room which eventually led to the scaffolding catching fire.

Image source, Ms Lai
More than 100 people have been trapped on the roof of Hong Kong’s World Trade Centre awaiting rescue after a fire broke out on Wednesday.
Hong Kong police confirmed to the BBC that at least eight people are injured and have been sent to hospital.
They said the fire broke out in the machine room, which eventually led to the scaffolding catching fire. The building is currently under renovation.
No fatalities have been reported and rescue operations are still under way.
The eight who are injured are aged between 31 to 72.
The fire has been classed as a level three incident, with five being the most severe.
The blaze at the 38-storey World Trade Centre on Gloucester Road was first reported at 12.37pm.