UPDATED 10PM with PAS Bayan Baru's comments Zahrain Mohamed Hashim should quit as MP for the Bayan Baru parliamentary constituency and pave the way for a by-election, said PAS spiritual leader Nik Abdul Aziz Nik Mat.

Zahrain - who left the Pakatan Rakyat coalition and declared himself an independent MP on Friday - had betrayed the trust of voters in Bayan Baru who had elected him as their MP, Nik Aziz was quoted as saying by Bernama.