WATCH: Woman falls through floor as possible sinkhole opens up under shopping mall

Video captured the moment last weekend when a woman casually shopping in a Chinese department store disappeared as a possible sinkhole swallowed a portion of the floor. 

A construction worker on the first floor of a shopping mall in the city of Zhenjiang in Jiangsu, China, told local outlets a sinkhole opened up, trapping him and causing the floor above to collapse. 

In the video, a woman was walking around on the second story of a shopping mall in Zhenjiang when the floor caved in, toppling two clothing racks as the woman fell through the hole. A second woman, wearing a yellow jacket, ran away from the hole before stopping to go back and check on the other woman, according to Newsflare.

Mr. Huang, a representative of the mall, told reporters both people suffered only minor injuries. Emergency crews and firefighters responded immediately and helped rescue both of the victims before cleaning up the damage.

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"As they are our customers, we, as the responsible party, have been actively handling the aftermath and providing necessary assistance," Huang said.

The construction worker suffered a leg injury from falling debris, while the shopper suffered fractures, Australian news outlet ABC reported. 

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City officials have launched an investigation into the incident to determine what caused the damage.  

China is no stranger to sinkholes. A giant one opened once up in an ancient forest in Guangxi Zhuang. The hole measured 1,000 feet in length, 490 feet in width and nearly 630 feet in depth. Experts determined the sinkhole had three cave entrances. 

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The sinkhole's bottom is lined with a "well-preserved primitive forest," according to the local news agency.

Sinkholes can form when the ground is worn away, either due to composition — such as limestone, a porous rock that easily dissolves in water — from a loss of groundwater that causes air pockets to form or from acid rainwater eating away at bedrock.