Dr Mahathir Mohamad has scoffed at Prime Minister Najib Abdul Razak's claim that the former prime minister is afraid of the Royal Commission of Inquiry (RCI) into the foreign exhange market (forex) scandal.

"On Aidilfitri, I wished Selamat Hari Raya to Najib, but he is always trying to find ways to arrest me.

"That's okay, he has the power. Tangkap lah! (Arrest me)," Mahathir said at a Parti Pribumi Bersatu Malaysia (Bersatu) Hari Raya open house in Malacca last night...