China's official news agency says part of a railway tunnel has collapsed in the southwest of the country, trapping an estimated 14 workers, AP reported. Xinhua News Agency says the collapse happened on Monday afternoon in Yunnan province. It said the tunnel was on a pivotal railway linking Yunnan with neighboring Guangxi region. It cited the local government and said the cause of the collapse was unclear. -- SPA 17:04 LOCAL TIME 14:04 GMT تغريد