NANCHANG - Four workers were killed when a tunnel that was under construction collapsed on Tuesday at a hydropower station in East China's Jiangxi province, local publicity authorities said. The accident occurred around 2:00 am in Suichuan county. Three people died at the scene, while one another died at a hospital.

Safety inspectors are looking into cause of the collapse.

The hydropower station is being built by Jiangxi Water and Hydropower Construction.