A Boeing-737 plane has crashed into the mountains in Guangxi in southern China.
The crash occurred on Monday afternoon (China time), according to Chinese state broadcaster CCTV.
Rescue teams are en route to the accident scene but the casualties are unknown, CCTV reported.
According to social media posts, a China Eastern Airlines flight MU5735 from Kunming to Guangzhou went missing earlier in the day.
No fewer than 133 crew members and passengers were on board.