SOME 90 workers in a Japanese-owned factory in Zhuhai were taken to hospital in the early hours of Tuesday with poisoning from an unknown source.

　　Earlier the previous night, about 70 workers in a close environment of a workshop claimed they felt dizzy and sick. The factory first asked the workers to have a rest, but the rest of workers felt bad by 3 a.m. Tuesday.

　　The factory management took the affected workers to the emergency room of Zhuhai People’s Hospital and shut the workshop.

　　It resumed production in 1:30 p.m. Tuesday after authorities completed an inspection of the workshop. Some 20 workers who went back to work soon after felt dizzy and breathless and were also sent to hospital.

　　The workshop has again been closed while an investigation is conducted by factory management together with health and safety authorities. A Ms. He of the factory’s general manager’s office said it was purely an accident and the factory was making all-out efforts to help the victims.

　　The head of Zhuhai’s Public Health Bureau said the investigation was still under way and no conclusion has been reached yet.

　　Sources said some of the 70 affected workers had gone back to the factory after being discharged from hospital while others with more serious symptoms were still in hospital.