Zhang Chunjiang, party chief and vice chairman of China Mobile, has been removed from his post for involvement in "serious economic issues," the Organization Department of the Communist Party of China (CPC) Central Committee said?in Beijing?on Thursday.

Zhang, 51, was confirmed to be under investigation for "serious discipline breach" on Dec. 26 by the CPC Central Commission for Discipline Inspection, the Party's internal anti-graft body.

Zhang became secretary of the leading Party group and vice chairman of China Mobile in May 2008.

China Mobile is the country's biggest wireless service provider and the world's largest mobile carrier by subscriber number.