China's efforts to take its anti-graft campaign global are being crimped by a serious lack of officials familiar with foreign languages and laws, the country's top newspaper said Tuesday.

China has pursued and brought home more than 600 suspected corrupt officials this year, in a strategy dubbed "Operation Fox Hunt," as it widens a crackdown on deep-rooted graft launched by President Xi Jinping three years ago.

More than a dozen of the top 100 suspects China targeted with an Interpol red notice in April have also been repatriated.