Hopes of finding survivors among the 132 people on board the Boeing 737 that crashed in China on Monday are fading fast as investigations into the country’s worst air disaster in more than two decades are launched.

Chinese leader Xi Jinping dispatched Liu He, his top aide and economy tsar, and state councillor Wang Yong to the site of wreckage in the mountains near Wuzhou, in southern China’s Guangxi region, after China Eastern Airlines flight MU5735 crashed with 123 passengers and nine crew members on board.

Charred items including wallets and identification cards were found by emergency staff, local media reported. But no survivors have been reported as local villagers and soldiers joined firefighters in combing the densely forested region.