An investigation team has concluded that the landslide in Shenzhen was a safety accident, not a natural hazard, and the local government apologized to victims during a news conference on Friday.

Sunday's landslide buried or damaged 33 buildings in Shenzhen's Guangming New District and led to the bursting of a major gas pipeline in nearby region, cutting off the gas supply to neighboring Hong Kong.

As of Friday morning, 75 people remained missing, only one survivor had been rescued - on Wednesday morning - and four bodies had been found.