Nine people have been arrested in connection to a deadly accident at a Chinese power plant that killed dozens of workers last week, according to China's state news agency Xinhua.

The chairman and chief engineer of Fengcheng Power Station in Jiangxi province were among those detained in relation to tragedy, in which a platform erected around a cooling tower suddenly collapsed.

The arrests were announced a day after China's top leaders ordered a nationwide review of safety standards at industrial sites.