Former premier Dr Mahathir Mohamad and two others today filed their appeal against a High Court decision to strike out their suit against Prime Minister Najib Abdul Razak.

Last Friday, Justice Abu Bakar Jais had ruled that the suit - which seeks to recover RM2.642 billion from Najib - was defective on grounds that the latter was not a public officer but a member of the administration.

The notice was filed by the firm of Messrs Haniff Khatri today.