Beijing: Chinese authorities have executed a former billionaire mining tycoon connected to the eldest son of retired domestic security chief Zhou Yongkang, the man who became the focus of a high-profile corruption investigation, state media reported.

The High People's Court in the central province of Hubei ordered Monday's execution of Liu Han, the former chairman of Hanlong Group, who was sentenced to death last May, the official Xinhua news agency said. Last February prosecutors in central China charged Liu with murder, gun-running and other crimes connected with a "mafia-style" gang. Liu's firm, Hanlong Mining, had earlier tried to take over Australia's Sundance Resources Ltd.

Liu Han, former chairman of Hanlong Mining, who has been executed over gang links. Credit:Reuters

The case against Liu was one of the most prominent involving a private businessman since President Xi Jinping took office two years ago and began a campaign against graft. Once ranked as China's 230th richest person, Liu was tried last year, along with 36 others, accused of murder and running the so-called gang. Liu's younger brother Liu Wei and three others were also executed, according to Xinhua.

Last year China announced a probe into Zhou Yongkang, one of its most influential politicians of the last decade, in a case that has its roots in a power struggle in the ruling Communist Party. Liu was once a business associate of Zhou's eldest son, Zhou Bin. State media have not explicitly linked Liu's case to Zhou Yongkang, but reported that his rise coincided with Zhou's time as Sichuan province's party boss.