Pasir Salak MP Tajuddin Abdul Rahman's 34-year-old son Firdaus Tajuddin and nine others have been ordered to surrender to police by Kuala Lumpur CPO Amar Singh for their involment in a riot on Parliament grounds today.

Amar Singh said the incident this morning was being investigated under Section 147 of the Penal Code, which concerns the offence of rioting.

"Police have indentified 10 individuals in the incident and we ask those involved to surrender to assist in investigation," Amar said in a statement today.