Four people were killed when a 70-meter-high crane collapsed in Guangdong Province, local authorities said Wednesday. The accident happened at the construction site of the workers'' residential buildings of BYD Battery Co., Ltd. located at the Dayawan Economic and Technical Development Zone in the city of Huizhou, China''s News Agency (Xinhua) reported. Three workers were killed at the scene, and the other one died in hospital after treatment failed. Construction has been suspended and the cause of the accident is being investigated.