Four killed in explosion at coal mine in China

At least four persons have been killed after a gas explosion at a coal mine in central China's Hunan Province, officials said.
The explosion at about 3 pm (local time) yesterday in Shaodong County coal mine instantly trapped five miners. Three persons - two confirmed dead and one with serious injuries - were hoisted from the mine by evening, state-run Xinhua news agency reported.
The remaining two victims were found dead, local authorities said.