Former prime minister Dr Mahathir Mohamad and two others who have filed application for a mareva injunction against Prime Minister Najib Abdul Razak to freeze the Umno president's assets is fixed for hearing at the High Court in Kuala Lumpur on June 23.

The court also fixed that the application for stay for Najib to file his defence be heard on April 26 at 3pm.

Both applications are expected to be heard before Justice Rosnani Saub, the judge who had been assigned to hear the case.

This was decided during case management yesterday. Najib was initially slated by the court to file his defence on April 28.

However, Najib filed an application for a stay in filing his defence and also an application to strike out the RM2.64 billion suit brought by Mahathir, and former Umno members Khairuddin Abu Hassan and Anina Saadudin on Tuesday.

Last night, it was reported by Bernama that Najib had filed the application to strike out the suit.

It was previously reported that Mahathir, Khairuddin who was former Batu Kawan Umno division vice-chief and Anina, former Langkawi Umno member, had filed the RM2.64 billion suit last month claiming that Najib had allegedly breached his fiduciary duty and committed malfeasance in public office to derail ongoing investigations against the sitting prime minister.

All three of them are part of the Citizens' Declaration movement to remove Najib as prime minister.

In their statement of claim, the plaintiffs said that due to Najib's position as the “numero uno” of Malaysia, he controls, commands and instructs or insists on omissions within the powers of each and every government machinery.

This includes ministries, ministers, parliamentary office (including the Public Accounts Committee) and legal enforcement agencies such as the Attorney-General’s Chambers, the police, the Malaysian Anti-Corruption Commission (MACC) and the Malaysian Communications and Multimedia Commission (MCMC).

They further claimed that Najib had acted in bad faith to undermine, or cause to compromise various respective institutions involved in the probe of 1MDB scandals related to the remittance of RM2.6 billion and RM42 million or any other amount into the PM's personal bank accounts.

Mahathir, Anina and Khairuddin claimed that 1MDB was set up in 2009 but between 2010 and 2013, there were various reports on allegations of serious financial impropriety concerning 1MDB.

It was also reported on Tuesday that Mahathir, Khairuddin and Anina had also filed a mareva injunction application to freeze Najib's assets of RM2.64 billion and another order of discovery for Najib to list out or itemised his assets.