China’s State Administration for Market Regulation announced Thursday it is investigating e-commerce platform Vipshop for “suspected unfair competition”.

The company has since responded with a message on its official Weibo account saying it will “actively cooperate with the regulatory authorities on this investigation”.

This probe into Vipshop is a continuation of an ongoing crackdown on anti-competitive practices among Chinese e-commerce players. Vipshop, together with market leaders, Alibaba’s Tmall and JD.com, were each fined 500,000 yuan ($77,000) in December for improper pricing conduct.