An initial investigation showed that a building fire in Chongqing was caused by a balcony fire, local authorities said.
The fire broke out around 5pm on Wednesday in a residential building in Yubei district, and no casualties were reported, according to the district's fire brigade.
Preliminary investigation showed the fire started from a balcony on the second floor of the 30-story building, and ignited the building's insulating layer and rain sheds.
The specific reason for the fire is still being investigated.