Search teams are still looking for possible survivors and the second black box of the crashed China Eastern Airline's flight MU5735. More wreckage pieces of the plane were found as the rescue team expanded the search area. 

The first black box, identified as the cockpit voice recorder, found some 20 meters away from the main impact area on Wednesday afternoon, is being analysed in Beijing. Experts are now trying to extract and decode the data in the device, officials said on Thursday. 

On Monday afternoon, the China Eastern Airlines Boeing 737-800 carrying 123 passengers and nine crew members crashed in south China's Guangxi Zhuang Autonomous Region.