7 injured, 4 critically, in fire at Hong Kong recycling yard
Bright orange flames and thick black smoke seen at Tai Po site after blast

Seven people have been injured, four critically, in a fire and explosions at a recycling yard in Hong Kong, forcing the evacuation of 300 people, including students and teachers on a nearby school trip.
The blaze broke out at 11.01am on Thursday in a recycling yard at the junction of Ting Kok Road and Fung Yuen Road in Tai Po district.
According to the Fire Services Department, it started in a scrap metal compactor housed inside a two-storey iron-sheet structure.
The department deployed two water jets and two teams of firefighters and extinguished the blaze at 12.37pm.
Of the seven injured, one was a firefighter, four were men, and two were women.
Three men with serious burns were sent to Prince of Wales Hospital in Sha Tin and were in critical condition on Thursday night.
One of the women was also listed as critical at Queen Mary Hospital in Pok Fu Lam.