A research and development lab of the Chinese tech giant Huawei Technologies in the southern city of Dongguan caught fire, producing large clouds of thick grey smoke. Locals caught the incident on camera.

The videos show plumes of smoke coming from the building’s top floors, and largely obscuring the sky above the facility. According to the local fire department, the flammable sound-absorbing cotton which the facility was using may be the main source of the blaze.

🚨 #BREAKING – A #Huawei research laboratory burns in 🔥 #Dongguanpic.twitter.com/BGqR7Hmz0J — ISCResearch (@ISCResearch) September 25, 2020