They are assisting with police investigations into offences regarding the display of the Singapore and Malaysia flags, according to a report in Today Online.

The report quoted a police spokesperson as saying no arrests had been made and that he was unable to comment further, citing ongoing investigations.

The event at Hong Lim Park last Sunday was organised by civil activist Jolovan Wham and non-governmental organisation Community Action Network. It was also attended by some members of civil activist group Function 8.

Today Online reported that in a statement posted on its Facebook page Tuesday, Function 8 said there were 15 participants at most, and that some of them were “intimidated” and “harassed” by the police.

Participants and organisers were ordered to go to the Kreta Ayer Police Post when the event ended, where they were “questioned at length” by police officers, who also seized their Singapore flag and mat, said Function 8.

Function 8 member Tan Tee Seng, 58, who participated in the event but left early, said he was questioned by four policemen who showed up at his flat about 8.30pm that night, reported Today Online.

“I was questioned for possibly breaking the law for displaying a foreign (Malaysian) flag,” Tan was quoted as saying.

The unlawful display of any national emblem is punishable with up to a SD500 fine or jail not longer than six months, or both, according to the report.

Bersih 5.0 is to be held in Kuala Lumpur this Saturday to pressure Malaysian authorities for greater accountability.