A massive fire engulfed a more than 656 foot (200m) tall high-rise office in Changsha, capital of China's southern province of Hunan, on late Friday.
The building is used by state-owned China Telecom, the country's second-largest wireless carrier.
“Thick smoke is spewing from the site, and several dozen floors are burning ferociously,” state media CCTV reported.
Local reports claim that people were evacuated from the building quickly, and it is not yet known if there were any fatalities.
The cause of the fire is not yet known.