The party said it was informed about the rally by Umno two weeks ago, and that its members are expected to take part to show solidarity with former Umno president Najib.

“MCA calls on the party’s leaders and members at all levels to join this peaceful assembly to uphold justice and demand the truth,” it said in a Facebook post today.

“MCA demands the government be transparent – if it (royal addendum) exists, say so; if it does not, say so.”

PAS’s rally will be held on the same day the Court of Appeal hears Najib’s application on a purported supplementary decree placing him under house arrest.

Najib claims the order was issued in a supplementary decree to a Feb 2 announcement by the Federal Territories Pardons Board, which halved his jail term from 12 years to six and reduced his fine from RM210 million to RM50 million.

He is currently serving the jail sentence following his conviction for corruption in the SRC International case.

Yesterday, MIC deputy president M Saravanan said thousands of party members will also attend the rally.

Saravanan said the rally goes “beyond party-based and racial politics” and is about securing justice for Najib concerning the purported supplementary decree.

PAS secretary-general Takiyuddin Hassan earlier issued an internal memo sighted by FMT saying the rally will focus on Najib’s appeal for leave to commence judicial review proceedings over the purported royal command.

The memo also called for party members to gather for prayers and speeches at the Palace of Justice in Putrajaya at 9am.

More than 200 busloads of Najib’s supporters are expected to attend the rally, comprising Umno and PAS members.

Bersatu leaders are also expected to be present.