HARBIN, July 9 (Xinhua) -- A fire fighting pump house under construction in northeast China's Heilongjiang Province collapsed and buried three workers Saturday morning, local authorities said.
The collapse occurred at around 6:30 a.m. in an industrial park in Zhaoyuan County. Four injured were sent to hospital and in stable conditions.
Rescuers are working to dig out those trapped in rubble.
An investigation into the cause of the collapse is under way.