BBC - Hundreds of rescue workers are looking for survivors after a landslide hit 33 buildings in the southern Chinese city of Shenzhen.
Seven people were pulled from the rubble with minor injuries but 91 are still missing. About 900 were evacuated as the landslide struck on Sunday.
Authorities said a huge man-made mound of earth and construction debris lost stability and collapsed.
The city is one of China's biggest and is a major industrial centre. It is situated in the southern province of Guangdong, across the mainland border from Hong Kong.
The landslide has blanketed a vast area of 380,000 sq m covering it with up to 10m of mud at an industrial park, Shenzhen's emergency management office said on its official microblog.
State news agency Xinhua said that the landslide caused an explosion at a natural gas pipeline. Workers have cleaned up about 400m of damaged pipeline and are now repairing it.
China's land and resources ministry said in a statement on its website that initial investigations showed the landslide happened when a huge mound of soil, cement chunks and other construction waste became unstable then collapsed.
People's Daily said the mound had accumulated at a stone quarry that had been converted into a dumping area with its entrance and exit facing an industrial district.
Until 30 years ago, Shenzhen was nothing but a quiet fishing village across the border from Hong Kong. But Chinese leader Deng Xiaoping had a vision. And he led its transformation into the country's first, and still the most successful, special economic zone - full of self-made entrepreneurs.
Shenzhen becomes a boom town, with a city centre surrounded by miles and miles of sprawling industrial parks.