BEIJING (Reuters) -- Chinese police have arrested three people in connection with an explosion at an auto parts plant that killed 75 people in China's worst industrial accident in a year, state media reported.
The three were Wu Chi-tao, chairman of Kunshan Zhongrong Metal Products Co., the company that owned the workshop, and the company's general manager and a manager in charge of workplace safety, state news agency Xinhua said.
Kunshan Zhongrong's safety practices were insufficient, the working environment was insufficient and production methods were illegal, Xinhua said earlier, citing initial results of an investigation.
A room filled with metal dust exploded at the Kunshan Zhongrong factory this month, killing 75 people and injuring 185. The plant, in the eastern province of Jiangsu, polishes wheel hubs for carmakers, including General Motors.