China's ruling party has fired the mayor of a northern city where a coal mine explosion killed 105 people, state media reported Thursday. Li Tiantai, mayor of Linfen in Shanxi province, was expelled from the Communist Party as the local deputy party chief and removed as mayor for failing to supervise the safety of the mine, Xinhua News Agency said. The Dec. 5 accident was the second deadliest this year, following a flood in a mine in eastern China that drowned 172 miners in August. In the Linfen accident, managers of the mine delayed reporting the explosion to local authorities for five hours while they tried to rescue the miners themselves. The owner of the mine and 35 others have been detained by police. So far, no one has been charged.