By Jonathan Davies

Chinese e-commerce giant Alibaba says one of its senior executives Patrick Liu has been arrested over allegations of corruption at a previous company.

The allegations relate to Liu's time at internet company Tencent. Tencent confirmed that six former employees were under investigation as part of an anti-graft probe.

It comes as part of Chinese government efforts to crackdown on corruption in some of the country's largest businesses.

Alibaba confirmed that the case was "related to his time at Tencent and has nothing to do with Alibaba".

Mr Liu left Tencent for Alibaba in 2013 to become the president of its digital entertainment business.