Shares in all five Hong Kong-listed companies of China Resources Holdings Co fell on Tuesday, wiping over $3 billion off its market capitalization, after China's top anti-corruption body launched a probe into its parent group chairman.

The selloff hit stocks of subsidiaries spanning energy, infrastructure, property and consumer businesses, led by China Resources Power Co which fell more than 11 percent in its worst day since July 17, 2013.

"The news triggered concern over their longer-term prospects, especially those (firms which) rely on acquisitions to achieve growth," said Alex Wong, a director at Hong Kong-based brokerage Ample Finance Group.

China Resources Power was followed by China Resources Cement Holdings, which dropped 5.8 percent, and China Resources Gas Group, which slid 2.8 percent.

Retail-focused China Resources Enterprise fell as much as 6.1 percent, heading for its biggest drop since February 25, and China Resources Land lost 3.6 percent.

The morning selloff wiped out more than $3 billion in market capitalization, according to Reuters calculations. The benchmark Hang Seng Index slipped 0.3 percent.

Shares in Geely Automobile Holdings - where China Resources Chairman Song Lin serves as an independent nonexecutive director - were also hit, falling to their lowest level in five weeks.

The Chinese carmaker said in a Hong Kong stock exchange filing, however, that the investigation would not have "a material adverse impact" on its business.

Reuters