Sina Weibo has been abuzz this weekend over photos of a building collapse in Haizhu District in Guangzhou.

The building, a fire brigade office, was under construction.  It collapsed on Saturday around noon, trapping seven people under the rubble.  In total, four people died and five more are seriously injured.

Police are now investigating.

It has been suggested that the construction of the fire station in Sanjiao Village on Guangzhou Road involved the use of too little cement or poor quality cement. Witnesses said they saw the roof start to slant and then collapse.

A survivor, identified as Lao Zhang, described climbing out of the building as soon as it collapsed, he suggested that the cause was the hasty construction of the building.

Guangzhou Party Secretary Wan Qingliang called for an investigation into the cause. Mayor Chen Jianhua called on local hospitals to do everything they can for the survivors, according to Nanfang Daily. Both men went to the scene of the accident to offer moral support to rescuers.

Users on Sina Weibo were critical of officials responsible for the building’s construction, claiming ‘idiots’ were behind the planning.  One also said “What is happening to China?”, referencing a fatal bridge collapse in Harbin that killed three last week.

Photos from Sina Weibo of the building collapse below.  You can see more footage of the rescue here.

(Thanks again to @MissXQ for the info).