Excavators clean up the accident site in Ganjiang New District of Nanchang, East China’s Jiangxi province, where part of a residential building collapsed at about 6:45 pm Monday, causing four deaths. Photo: Liu Zhankun/China News Service, VCG

The collapsed six-floor building is a staff dormitory of a pharmaceutical factory in Nanchang. Photo: Courtesy of CCTV

The dormitory was built in 1995, with most of the residents living there being seniors. Photo: Liu Lixin/China News Service, VCG

Excavators work at the site Monday in Nanchang. The collapsed part of the building is around 430 square meters. Photo: Liu Zhankun/China News Service, VCG

Rescue work continued through the night and early Tuesday morning at the site. Photo: Liu Lixin/China News Service, VCG

Rescuers search for trapped residents at the site. All victims who were later confirmed dead by the hospital were found at about 4:25 am Tuesday. Photo: Courtesy of CCTV

Rescuers carry fire ladders to the site early Tuesday morning in Ganjiang New District of Nanchang. Photo: Liu Lixin/China News Service, VCG

An ambulance stands by at the site on early Tuesday morning. Investigation into the cause of the accident is underway. Photo: Liu Lixin/China News Service, VCG