UPDATE 2-Former Tencent employees, including Alibaba exec, held in China graft probe
July 09, 2015 at 22:24 PM EDT
BEIJING, July 9 (Reuters) - Chinese authorities have detained about half a dozen former employees of Tencent Holdings Ltd, the country's biggest social network and online media company, as part of a graft investigation following an internal company probe, Tencent said late on Thursday.