At least nine people were killed in a blast in a residential building in northern China's Shanxi province.

Six people were injured in the incident on Sunday. Some residential buildings and some adjacent buildings collapsed.China's state news agency Xinhua quoted the information as saying NDTV Online.It has been speculated that the explosion may have been caused by illegal explosives stored. Investigation is going on in this incident. China's state-run broadcasting media, CCTV, said the excavation and search was being conducted on the spot.In China, residential areas have been developed. Almost there are explosions in these areas. There are many complaints about the safety of the industry in China.