KUALA LUMPUR: Umno has called on authorities to take action against former Damansara member of parliament (MP) Tony Pua over a Facebook post allegedly mocking the King over Datuk Seri Najib Razak's conditional pardon.

Umno secretary-general Datuk Dr Asyraf Wajdi Dusuki said Pua's post also clearly questioned the Yang di-Pertuan Agong's authority in the Pardons Board.

He said Pua's remarks had also encouraged individuals to make insulting comments about a sovereign ruler.

"Umno wants to know whether the authorities, particularly the police, Malaysian Communications and Multimedia Commission and Attorney-General, can allow such matters to go unchecked?