SINGAPORE, May 13 -- Three political office-holders in Singapore are taking legal steps against a man who accused them online of links to convicted money launderer Su Haijin, a Fujian gang member at the centre of Singapore's largest money laundering case.

The Straits Times (ST) reported today that Health Minister Ong Ye Kung, Transport Minister Chee Hong Tat and labour chief Ng Chee Meng have sent legal letters to Facebook user Sng Chia Huat, also known as Rich Sng, demanding an apology and damages for defamatory posts.

In two Facebook posts, Sng claimed Ong and Chee knew Su had committed crimes but condoned his actions.

He also accused them of "dishonestly pretending not to know Su", being "involved in or susceptible to corruption or ...