Five people were killed and eight others injured Thursday when a pharmaceutical workshop in southwest China's Yunnan Province exploded. According to a Chinese news agency, the blast happened at around 10 a.m. in the Guandu District of Kunming, the provincial capital. The workshop belonged to Quanxin Pharmaceutical Co. Ltd. Students and teachers at a high school neighboring the workshop were evacuated after the blast. A fire triggered by the blast was extinguished. The eight injured are being treated at a local hospital. Five of them suffered severe injuries. The cause of the accident is under investigation.