Two workers were killed and two missing in a construction site collapse in Jiuquan City, northwest China's Gansu Province, local authorities said Friday.
The accident happened in Suzhou District, Jiuquan, at 9:05 p.m. Thursday. It also left seven people slightly injured.
Rescuers are searching for the missing, an official with the provincial work safety bureau said.
An investigation into the accident is underway.
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