Workers' Party chief Low Thia Khiang has dismissed talk that he did not defend party comrades Sylvia Lim and Pritam Singh in Parliament on Tuesday.

He said Environment and Water Resources Minister Vivian Balakrishnan, who made that observation in a Facebook post on Tuesday night, may not have heard him well, because his opening words in Parliament were that he "agreed" with Ms Lim.

Speaking to reporters before his weekly Meet-the-People session on Wednesday night, Mr Low said he stood by the party's earlier investigation , which showed that the claims that the WP town council had asked for additional money to clean the high areas of two hawker centres in Bedok North were "baseless".

He added that no further investigations would be carried out, despite calls from the Minister for them.

Asked what he thought of the Minister waiving parliamentary privilege, which many read as a challenge to WP leaders to sue if they thought he had defamed them when he accused them of lying, Mr Low referred to a recent comment by Prime Minister Lee Hsien Loong that Singapore needed to get its politics right.

Mr Low said he did not think making personal attacks and challenging others to sue you constituted good politics.