The main body representing Chinese businesses here has lodged a police report against the man fighting for the $40 million assets of a widow, claiming that there is no member by his name in the group.

The Singapore Chinese Chamber of Commerce & Industry (SCCCI) said it made a police report against Chinese tour guide Yang Yin for misrepresenting himself as the association's director.

"It has come to the SCCCI's attention that an individual identifying himself as Yang Yin has been representing himself as a "Director of the Singapore Chinese Chamber of Commerce", including but not limited to handing out name cards containing the aforesaid position," said SCCCI in a statement.

Last week, The Straits Times had obtained a copy of Mr Yang's business card which listed him as a director at the SCCCI.

SCCCI said it does not have a director, council member or member by the name of "Yang Yin".

Mr Yang, now a Singapore Permanent Resident, is embroiled in a legal battle for the assets of 87-year-old widow Chung Khin Chun. They met in 2008 when Madam Chung was on holiday in Beijing.

Madam Chung whose husband passed away in 2007, has no children and was diagnosed with dementia this year.

Madam Chung's niece, 60-year-old travel agency owner Hedy Mok, has started court proceedings to revoke Mr Yang's guardianship of her aunt's $40-million assets earlier this year.

When asked, police confirmed the report was lodged.