Prime Minister Dr Mahathir Mohamad and Johor ruler Sultan Ibrahim Sultan Iskandar have engaged in a public tiff as to who has the prerogative to appoint the state's menteri besar.

Mahathir maintained that Bersatu had the right to select a new MB, while Sultan Ibrahim has warned “certain quarters” not to meddle in the state’s affairs.

Today, Mahathir added that he believes Johor is a part of Malaysia.