Some 1,200 residents have been evacuated from near a nine-meter-deep sinkhole in Guangzhou, Guangdong Province, which subsided again after workers finished filling in the hole that appeared on Monday, according to the China Central Television (CCTV).

The subsidence occurred at an intersection of Kangwang Road in Liwan district, where the city's No 6 metro line is under construction. Two buildings containing six shops were swallowed by the hole.

A government worker surnamed Zhou of Liwan district confirmed to the Global Times that the ground subsided again Tuesday afternoon. Zhan Long, a Gaungzhou-based geologist said the cause of the subsidence may be geological conditions and the subway construction. "The buildings were over 100 years old and any underground construction can lead to a drop in the water table, which can cause subsidence.

Guangzhou Metro Corporation said on its official Weibo that its workers first discovered the land subsiding at the project site and helped evacuate residents.

Zhou confirmed that no one was hurt when the buildings collapsed into the hole.

A public affairs officer with Guangzhou Metro surnamed Ye told the Global Times Tuesday, he could not answer questions about possible compensation to local residents affected by the apparent cave-in.

The city government could not be reached Tuesday afternoon.

The Guangzhou government's emergency response team set up a headquarters at the site, evacuating nearby residents and preparing for possible further collapses, the Xinhua News Agency reported on Tuesday.

Guangzhou Metro said they will fully cooperate with the investigation, according to updates on the company's Weibo Tuesday evening.

By Tuesday evening 1,200 people from 412 households and 103 shops had been evacuated within a 50-meter parameter of the cave-in.