SINGAPORE'S white-collar crimefighters have sought access and information related to Innopac Holdings' chief executive, the investment holding and management company announced on Thursday.

The Commercial Affairs Department (CAD) has asked Wong Chin-Yong to assist with investigations into suspected breached of the Securities and Futures Act (SFA), Innopac said.

CAD has also asked for access to, among others, all corporate electronic data and equipment belonging to Mr Wong.

CAD said on Wednesday that it is investigating suspected trading irregularities in the stocks of Asiasons Capital, Blumont Group and LionGold Corp.

Investigators have so far sought information about Blumont executive chairman Neo Kim Hock; Blumont executive director James Hong Gee Ho; LionGold independent director and Ipco International secretary Lynne Ng Su Ling; LionGold director of business and corporate development Peter Chen Hing Woon; Magnus Energy chief operating officer Koh Teng Kiat; and Magnus Energy chief financial officer Luke Ho Khee Yong.

Asiasons and Asiasons associate company ISR Capital have also halted trading in their stocks.

Innopac shares slipped 6.3 per cent, or 0.1 cent, to 1.5 cents before trading was halted for the announcement.