File photo: CGTN

Two people were found dead in a roof collapse at a polymetallic mine in southwest China's Guangxi Zhuang Autonomous Region on Tuesday, local authorities said Tuesday.

The roof caving incident happened at 3:20 a.m. local time at an ore field in Daping Village of Nandan County. 

Rescuers are searching for the missing. The cause of the incident is being investigated.